diff --git a/src/main/java/codechicken/nei/BookmarkPanel.java b/src/main/java/codechicken/nei/BookmarkPanel.java
index d65a8efb..c6529ce3 100644
--- a/src/main/java/codechicken/nei/BookmarkPanel.java
+++ b/src/main/java/codechicken/nei/BookmarkPanel.java
@@ -19,6 +19,7 @@ import net.minecraft.client.gui.inventory.GuiContainer;
 import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.util.EnumChatFormatting;
 
 import org.apache.commons.io.IOUtils;
 
@@ -184,27 +185,33 @@ public class BookmarkPanel extends PanelWidget<BookmarkGrid> {
         if (itemStack != null && this.grid.indexOf(groupId, itemStack, recipeId, false) == -1) {
             final boolean existsRecipe = recipeId != null
                     && this.grid.existsRecipe(recipeId, BookmarkGrid.DEFAULT_GROUP_ID);
-            final NBTTagCompound nbTag = StackInfo.itemStackToNBT(itemStack);
-            long count = nbTag.getInteger("Count");
-            long factor = existsRecipe ? Math.max(count, 1) : 1;
+            final Recipe recipe = Recipe.of(recipeId);
+            final BookmarkItem.Builder builder;
+
+            if (recipe != null) {
+                builder = BookmarkItem.builder(groupId, itemStack, recipe, BookmarkItemType.RESULT);
+            } else {
+                builder = BookmarkItem.builder(groupId, itemStack).recipeId(recipeId)
+                        .factor(StackInfo.getAmount(itemStack));
+            }
+
+            builder.multiplier(1);
 
             if (existsRecipe) {
+                builder.type(BookmarkItemType.RESULT);
+
                 for (int i = 0; i < this.grid.size(); i++) {
                     if (this.grid.getBookmarkItem(i).equalsRecipe(recipeId, groupId)) {
-                        count *= this.grid.getBookmarkItem(i).getMultiplier();
+                        builder.multiplier(this.grid.getBookmarkItem(i).getMultiplier());
                         break;
                     }
                 }
+
+            } else {
+                builder.type(BookmarkItemType.ITEM);
             }
 
-            this.grid.addItem(
-                    BookmarkItem.of(
-                            groupId,
-                            StackInfo.withAmount(itemStack, count),
-                            factor,
-                            recipeId,
-                            existsRecipe ? BookmarkItemType.RESULT : BookmarkItemType.ITEM),
-                    true);
+            this.grid.addItem(builder.build(), true);
             return true;
         }
 
@@ -212,9 +219,11 @@ public class BookmarkPanel extends PanelWidget<BookmarkGrid> {
     }
 
     public boolean addRecipe(Recipe recipe, int multiplier, int groupId) {
+        if (recipe == null) return false;
+
         final RecipeId recipeId = recipe.getRecipeId();
 
-        if (recipe != null && this.grid.getGroup(groupId) != null && !this.grid.existsRecipe(recipeId, groupId)) {
+        if (this.grid.getGroup(groupId) != null && !this.grid.existsRecipe(recipeId, groupId)) {
             this.grid.addRecipe(recipe, multiplier, groupId);
             return true;
         }
@@ -245,15 +254,22 @@ public class BookmarkPanel extends PanelWidget<BookmarkGrid> {
                 ItemStack stack = recipeId.getResult();
 
                 if (stack != null && uniqueRecipe.add(recipeId)) {
-                    this.grid.addItem(
-                            BookmarkItem
-                                    .of(groupId, stack, StackInfo.getAmount(stack), recipeId, BookmarkItemType.ITEM),
-                            true);
+                    final Recipe recipe = Recipe.of(recipeId);
+                    final BookmarkItem.Builder builder;
+
+                    if (recipe != null) {
+                        builder = BookmarkItem.builder(groupId, stack, recipe, BookmarkItemType.RESULT);
+                    } else {
+                        builder = BookmarkItem.builder(groupId, stack).recipeId(recipeId)
+                                .factor(StackInfo.getAmount(stack));
+                    }
+
+                    this.grid.addItem(builder.multiplier(1).type(BookmarkItemType.ITEM).build(), true);
                     uniqueStack.add(stack);
                 }
 
             } else {
-                ItemStack stack = extractItem(item);
+                final ItemStack stack = extractItem(item);
 
                 if (stack != null && !uniqueStack.contains(stack)) {
                     this.grid.addItem(BookmarkItem.of(groupId, stack), true);
@@ -925,6 +941,15 @@ public class BookmarkPanel extends PanelWidget<BookmarkGrid> {
 
         if (slot != null) {
 
+            if (slot.getBookmarkItem().chance != PositionedStack.CHANCE_FULL) {
+                currenttip.add(
+                        1,
+                        EnumChatFormatting.DARK_GRAY + NEIClientUtils.translate(
+                                "recipe.chance",
+                                NEIClientUtils.formatNumber(
+                                        slot.getBookmarkItem().chance * 100f / PositionedStack.CHANCE_FULL)));
+            }
+
             if (slot.getType() == BookmarkItemType.INGREDIENT && slot.getRecipeId() != null
                     && slot.getBookmarkItem().permutations.size() > 1) {
                 RecipeId recipeId = slot.getRecipeId();
@@ -1119,7 +1144,7 @@ public class BookmarkPanel extends PanelWidget<BookmarkGrid> {
 
             for (BookmarkItem item : math.initialItems) {
                 final long invStackSize = inventory.getOrDefault(item.itemStack, 0L);
-                final long amount = item.amount - invStackSize * item.fluidCellAmount;
+                final long amount = item.getAmount() - invStackSize * item.fluidCellAmount;
                 if (amount > 0) {
                     pullItemStacks.add(item.getItemStack(amount));
                 }
@@ -1133,7 +1158,7 @@ public class BookmarkPanel extends PanelWidget<BookmarkGrid> {
             for (BookmarkItem item : math.initialItems) {
                 final long invStackSize = inventory.getOrDefault(item.itemStack, 0L);
                 final long strStackSize = containerStorage.getOrDefault(item.itemStack, 0L);
-                final long amount = item.amount - invStackSize * item.fluidCellAmount
+                final long amount = item.getAmount() - invStackSize * item.fluidCellAmount
                         - strStackSize * item.fluidCellAmount;
 
                 if (amount > 0) {
diff --git a/src/main/java/codechicken/nei/NEIClientConfig.java b/src/main/java/codechicken/nei/NEIClientConfig.java
index 5c952ba2..72d46b27 100644
--- a/src/main/java/codechicken/nei/NEIClientConfig.java
+++ b/src/main/java/codechicken/nei/NEIClientConfig.java
@@ -266,6 +266,9 @@ public class NEIClientConfig {
         tag.getTag("inventory.guirecipe.profile").getBooleanValue(false);
         API.addOption(new OptionToggleButton("inventory.guirecipe.profile", true));
 
+        tag.getTag("inventory.guirecipe.chance").getBooleanValue(false);
+        API.addOption(new OptionToggleButton("inventory.guirecipe.chance", true));
+
         tag.getTag("inventory.guirecipe.handlerInfo").setComment("ADVANCED: Handler Info Widget")
                 .getBooleanValue(false);
         API.addOption(new OptionToggleButton("inventory.guirecipe.handlerInfo", true));
@@ -1140,6 +1143,10 @@ public class NEIClientConfig {
         return getBooleanSetting("inventory.guirecipe.shiftOverlayRecipe");
     }
 
+    public static boolean showRecipeItemChances() {
+        return getBooleanSetting("inventory.guirecipe.chance");
+    }
+
     public static boolean isEnabled() {
         return enabledOverride && getBooleanSetting("inventory.widgetsenabled");
     }
diff --git a/src/main/java/codechicken/nei/NEIClientUtils.java b/src/main/java/codechicken/nei/NEIClientUtils.java
index 12921bef..59ec14d2 100644
--- a/src/main/java/codechicken/nei/NEIClientUtils.java
+++ b/src/main/java/codechicken/nei/NEIClientUtils.java
@@ -126,7 +126,7 @@ public class NEIClientUtils extends NEIServerUtils {
         });
     }
 
-    public static String formatNumber(long aNumber) {
+    public static String formatNumber(Number aNumber) {
 
         if (NEIModContainer.isGTNHLibLoaded()) {
             return NumberFormatUtil.formatNumber(aNumber);
@@ -135,7 +135,7 @@ public class NEIClientUtils extends NEIServerUtils {
         return getDecimalFormat().format(aNumber);
     }
 
-    public static String formatFluid(long aNumber) {
+    public static String formatFluid(Number aNumber) {
 
         if (NEIModContainer.isGTNHLibLoaded()) {
             return NumberFormatUtil.formatFluid(aNumber);
@@ -526,6 +526,11 @@ public class NEIClientUtils extends NEIServerUtils {
         }
     }
 
+    public static String getTextColorOrDefault(String key, String defaultColor) {
+        final String translated = NEIClientUtils.translate(key); // Optional localization string for resource packs
+        return translated.startsWith("nei.") ? defaultColor : translated;
+    }
+
     public static void drawRect(double left, double top, double width, double height, Color color) {
         final boolean is2DTexture = GL11.glGetBoolean(GL11.GL_TEXTURE_2D);
         final boolean isBlend = GL11.glGetBoolean(GL11.GL_BLEND);
diff --git a/src/main/java/codechicken/nei/PositionedStack.java b/src/main/java/codechicken/nei/PositionedStack.java
index c2fe0d8b..53f26713 100644
--- a/src/main/java/codechicken/nei/PositionedStack.java
+++ b/src/main/java/codechicken/nei/PositionedStack.java
@@ -21,12 +21,16 @@ import codechicken.nei.recipe.StackInfo;
  */
 public class PositionedStack {
 
+    /** Maximum chance value representing 100% probability (1 unit = 0.01%). */
+    public static final int CHANCE_FULL = 10_000;
+
     public int relx;
     public int rely;
     public ItemStack[] items;
     // compatibility dummy
     public ItemStack item;
 
+    protected int chance = CHANCE_FULL;
     private boolean permutated = false;
 
     public PositionedStack(Object object, int x, int y, boolean genPerms) {
@@ -82,6 +86,10 @@ public class PositionedStack {
         for (ItemStack item : items) if (item.stackSize > i) item.stackSize = i;
     }
 
+    public int getChance() {
+        return this.chance;
+    }
+
     public PositionedStack copy() {
         PositionedStack pStack = new PositionedStack(
                 Arrays.stream(this.items).map(ItemStack::copy).toArray(ItemStack[]::new),
@@ -89,6 +97,7 @@ public class PositionedStack {
                 rely,
                 false);
         pStack.permutated = this.permutated;
+        pStack.chance = getChance();
         return pStack;
     }
 
diff --git a/src/main/java/codechicken/nei/SubsetWidget.java b/src/main/java/codechicken/nei/SubsetWidget.java
index 2060743f..72c2ed9b 100644
--- a/src/main/java/codechicken/nei/SubsetWidget.java
+++ b/src/main/java/codechicken/nei/SubsetWidget.java
@@ -694,13 +694,10 @@ public class SubsetWidget extends Button implements ItemFilterProvider {
         if (NEIClientConfig.subsetWidgetOnTop()) {
             return NEIClientUtils.translate("inventory.item_subsets");
         } else {
-            final String translated = NEIClientUtils.translate("gui.button.label.subset");
-            if (!translated.startsWith("nei.")) { // Optional localization string for resource packs
-                return translated;
-            }
-
-            return EnumChatFormatting.DARK_PURPLE + String.valueOf(SearchField.searchParser.getRedefinedPrefix(PREFIX))
-                    + EnumChatFormatting.RESET;
+            return NEIClientUtils.getTextColorOrDefault(
+                    "gui.button.label.subset",
+                    EnumChatFormatting.DARK_PURPLE
+                            + String.valueOf(SearchField.searchParser.getRedefinedPrefix(PREFIX)));
         }
 
     }
diff --git a/src/main/java/codechicken/nei/api/ShortcutInputHandler.java b/src/main/java/codechicken/nei/api/ShortcutInputHandler.java
index 0e4d11fa..fe70c8fa 100644
--- a/src/main/java/codechicken/nei/api/ShortcutInputHandler.java
+++ b/src/main/java/codechicken/nei/api/ShortcutInputHandler.java
@@ -23,6 +23,7 @@ import codechicken.nei.ItemsGrid.ItemsGridSlot;
 import codechicken.nei.LayoutManager;
 import codechicken.nei.NEIClientConfig;
 import codechicken.nei.NEIClientUtils;
+import codechicken.nei.PositionedStack;
 import codechicken.nei.SearchField;
 import codechicken.nei.bookmark.BookmarkGrid;
 import codechicken.nei.bookmark.BookmarkGroup;
@@ -646,8 +647,10 @@ public abstract class ShortcutInputHandler {
         final List<ItemStack> playerInventory = AutoCraftingManager.getInventoryItems(guiContainer).values();
         final RecipeId rootRecipeId = math.createMasterRoot();
 
-        for (BookmarkItem item : math.recipeIngredients) {
-            if (item.amount > 0 && rootRecipeId.equals(item.recipeId)) {
+        for (int i = 0; i < math.recipeIngredients.size(); i++) {
+            final BookmarkItem item = math.recipeIngredients.get(i);
+
+            if (item.getAmount() > 0 && rootRecipeId.equals(item.recipeId)) {
                 long amount = 0;
 
                 for (ItemStack stack : playerInventory) {
@@ -656,8 +659,12 @@ public abstract class ShortcutInputHandler {
                     }
                 }
 
-                if (amount >= item.amount) {
-                    item.factor = item.amount = amount + item.amount - (amount % item.amount);
+                if (amount >= item.getAmount()) {
+                    math.recipeIngredients.set(
+                            i,
+                            BookmarkItem.builder(item).multiplier(1)
+                                    .factor(amount + item.getAmount() - (amount % item.getAmount()))
+                                    .chance(PositionedStack.CHANCE_FULL).build());
                 }
             }
         }
diff --git a/src/main/java/codechicken/nei/bookmark/BookmarkGrid.java b/src/main/java/codechicken/nei/bookmark/BookmarkGrid.java
index 8d5da5b4..98812065 100644
--- a/src/main/java/codechicken/nei/bookmark/BookmarkGrid.java
+++ b/src/main/java/codechicken/nei/bookmark/BookmarkGrid.java
@@ -24,7 +24,7 @@ import codechicken.lib.gui.GuiDraw;
 import codechicken.lib.vec.Rectangle4i;
 import codechicken.nei.BookmarkPanel.BookmarkViewMode;
 import codechicken.nei.ItemPanels;
-import codechicken.nei.ItemStackAmount;
+import codechicken.nei.ItemStackSet;
 import codechicken.nei.ItemsGrid;
 import codechicken.nei.ItemsGrid.MouseContext;
 import codechicken.nei.LayoutManager;
@@ -33,6 +33,7 @@ import codechicken.nei.NEIClientUtils;
 import codechicken.nei.bookmark.BookmarkItem.BookmarkItemType;
 import codechicken.nei.recipe.Recipe;
 import codechicken.nei.recipe.Recipe.RecipeId;
+import codechicken.nei.recipe.Recipe.RecipeIngredient;
 import codechicken.nei.recipe.StackInfo;
 import codechicken.nei.recipe.chain.RecipeChainMath;
 
@@ -139,17 +140,16 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
             if (group.collapsedRecipes.contains(collapsedRecipeId)) {
 
                 for (BookmarkItem item : this.bookmarkItems) {
-                    if (item.groupId == groupId && collapsedRecipeId.equals(item.recipeId)
-                            && item.amount == item.factor) {
-                        item.amount = 0;
+                    if (item.groupId == groupId && collapsedRecipeId.equals(item.recipeId) && item.multiplier == 1) {
+                        item.multiplier = 0;
                     }
                 }
 
             } else {
 
                 for (BookmarkItem item : this.bookmarkItems) {
-                    if (item.groupId == groupId && collapsedRecipeId.equals(item.recipeId) && item.amount == 0) {
-                        item.amount = item.factor;
+                    if (item.groupId == groupId && collapsedRecipeId.equals(item.recipeId) && item.multiplier == 0) {
+                        item.multiplier = 1;
                     }
                 }
 
@@ -627,15 +627,16 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
         for (int itemIndex = 0; itemIndex < this.bookmarkItems.size(); itemIndex++) {
             final BookmarkItem item = this.bookmarkItems.get(itemIndex);
             if (item.groupId == groupId && (recipeRelations == null || recipeRelations.contains(item.recipeId))) {
-                long amount = item.amount;
 
                 if (recipeId != null && group.crafting != null
                         && group.crafting.calculatedItems.containsKey(itemIndex)
                         && recipeId.equals(item.recipeId)) {
-                    amount = group.crafting.calculatedItems.get(itemIndex).getCalculatedAmount();
+                    chainItems.add(
+                            item.copyWithAmount(group.crafting.calculatedItems.get(itemIndex).getCalculatedAmount()));
+                } else {
+                    chainItems.add(item.copy());
                 }
 
-                chainItems.add(item.copyWithAmount(amount));
             }
         }
 
@@ -896,34 +897,28 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
     }
 
     public void addRecipe(Recipe recipe, int multiplier, int groupId) {
-        final RecipeId recipeId = recipe.getRecipeId();
-        final List<ItemStack> results = recipe.getResults().stream().map(res -> res.getItemStack())
-                .collect(Collectors.toList());
-        final List<ItemStack> ingredients = recipe.getIngredients().stream().map(ingr -> ingr.getItemStack())
-                .collect(Collectors.toList());
+        final ItemStackSet results = new ItemStackSet();
+        final ItemStackSet ingredients = new ItemStackSet();
 
-        for (ItemStack stack : ItemStackAmount.of(results).values()) {
-            long factor = StackInfo.getAmount(stack);
+        for (RecipeIngredient result : recipe.getResults()) {
+            results.add(result.getItemStack());
+        }
+
+        for (RecipeIngredient ingr : recipe.getIngredients()) {
+            ingredients.add(ingr.getItemStack());
+        }
+
+        for (ItemStack stack : results.values()) {
             this.addItem(
-                    BookmarkItem.of(
-                            groupId,
-                            StackInfo.withAmount(stack, factor * multiplier),
-                            factor,
-                            recipeId,
-                            BookmarkItemType.RESULT),
+                    BookmarkItem.builder(groupId, stack, recipe, BookmarkItemType.RESULT).multiplier(multiplier)
+                            .build(),
                     true);
         }
 
-        for (ItemStack stack : ItemStackAmount.of(ingredients).values()) {
-            long factor = StackInfo.getAmount(stack);
+        for (ItemStack stack : ingredients.values()) {
             this.addItem(
-                    BookmarkItem.of(
-                            groupId,
-                            StackInfo.withAmount(stack, factor * multiplier),
-                            factor,
-                            recipeId,
-                            BookmarkItemType.INGREDIENT,
-                            BookmarkItem.generatePermutations(stack, recipe)),
+                    BookmarkItem.builder(groupId, stack, recipe, BookmarkItemType.INGREDIENT).multiplier(multiplier)
+                            .build(),
                     true);
         }
     }
@@ -1133,8 +1128,8 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
             final Set<Long> sizes = new HashSet<>();
 
             for (BookmarkItem item : this.bookmarkItems) {
-                if (item.groupId == targetGroupId && item.amount > 0) {
-                    sizes.add(Math.max(item.getStackSize(), item.factor / item.fluidCellAmount));
+                if (item.groupId == targetGroupId && item.getAmount() > 0) {
+                    sizes.add(Math.max(item.getStackSize(), item.getStackSize(item.getAmount(1))));
                     items.add(item);
                 }
             }
@@ -1143,14 +1138,16 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
             long multiplier = Integer.MAX_VALUE;
 
             for (BookmarkItem item : items) {
-                long customFactor = (long) Math.ceil(item.amount / (double) gcd);
-                long customMultiplier = (long) (customFactor > 0 ? Math.ceil(item.amount / (double) customFactor) : 0);
+                final long amount = item.getAmount();
+                final long customFactor = (amount + gcd - 1) / gcd;
+                final long customMultiplier = customFactor > 0 ? ((amount + customFactor - 1) / customFactor) : 0;
                 multiplier = Math.min(shiftMultiplier(customMultiplier, shift, 1), multiplier);
             }
 
             for (BookmarkItem item : items) {
-                long customFactor = (long) Math.ceil(item.amount / (double) gcd);
-                item.amount = customFactor * multiplier;
+                final long amount = item.getAmount();
+                final long customFactor = (amount + gcd - 1) / gcd;
+                item.multiplier = item.getMultiplierFromAmount(customFactor * multiplier);
             }
         } else {
             final Map<RecipeId, Long> recipeMultipliers = new HashMap<>();
@@ -1158,7 +1155,7 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
             final List<BookmarkItem> items = new ArrayList<>();
 
             for (BookmarkItem item : this.bookmarkItems) {
-                if (item.factor > 0
+                if (!item.emptyFactor()
                         && outputRecipes.stream().anyMatch(recipeId -> item.equalsRecipe(recipeId, targetGroupId))) {
                     final long multiplier = recipeMultipliers.getOrDefault(item.recipeId, (long) Integer.MAX_VALUE);
                     final boolean recipeInMiddle = group.crafting != null
@@ -1168,7 +1165,7 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
                             item.recipeId,
                             Math.min(
                                     shiftMultiplier(
-                                            Math.max(recipeInMiddle ? 1 : 0, item.getMultiplier()),
+                                            Math.max(recipeInMiddle ? 1 : 0, item.multiplier),
                                             shift,
                                             recipeInMiddle ? 1 : 0),
                                     multiplier));
@@ -1177,7 +1174,7 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
             }
 
             for (BookmarkItem item : items) {
-                item.amount = item.factor * recipeMultipliers.getOrDefault(item.recipeId, 0L);
+                item.multiplier = recipeMultipliers.getOrDefault(item.recipeId, 0L);
             }
         }
 
@@ -1197,10 +1194,10 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
             long multiplier = Integer.MAX_VALUE;
 
             for (BookmarkItem item : this.bookmarkItems) {
-                if (item.equalsRecipe(recipeId, targetItem.groupId) && item.factor > 0) {
+                if (item.equalsRecipe(recipeId, targetItem.groupId) && !item.emptyFactor()) {
                     multiplier = Math.min(
                             shiftMultiplier(
-                                    Math.max(recipeInMiddle ? 1 : 0, item.getMultiplier()),
+                                    Math.max(recipeInMiddle ? 1 : 0, item.multiplier),
                                     shift,
                                     recipeInMiddle ? 1 : 0),
                             multiplier);
@@ -1208,8 +1205,8 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
             }
 
             for (BookmarkItem item : this.bookmarkItems) {
-                if (item.equalsRecipe(recipeId, targetItem.groupId) && item.factor > 0) {
-                    item.amount = item.factor * multiplier;
+                if (item.equalsRecipe(recipeId, targetItem.groupId) && !item.emptyFactor()) {
+                    item.multiplier = multiplier;
                 }
             }
 
@@ -1217,7 +1214,7 @@ public class BookmarkGrid extends ItemsGrid<BookmarksGridSlot, BookmarkGrid.Book
 
             for (BookmarkItem item : this.bookmarkItems) {
                 if (targetItem.equals(item)) {
-                    item.amount = item.factor * shiftMultiplier(item.getMultiplier(), shift, 0);
+                    item.multiplier = shiftMultiplier(item.multiplier, shift, 0);
                     break;
                 }
             }
diff --git a/src/main/java/codechicken/nei/bookmark/BookmarkGridGenerator.java b/src/main/java/codechicken/nei/bookmark/BookmarkGridGenerator.java
index 90d06d05..14c770da 100644
--- a/src/main/java/codechicken/nei/bookmark/BookmarkGridGenerator.java
+++ b/src/main/java/codechicken/nei/bookmark/BookmarkGridGenerator.java
@@ -189,13 +189,11 @@ public class BookmarkGridGenerator {
         for (int shadowIndex : shadows) {
             final boolean isIngredient = shadows.get(0) != shadowIndex
                     || group.crafting.calculatedItems.get(shadowIndex).calculatedType == CalculatedType.INGREDIENT;
-            final BookmarkItem shadowBookmarkItem = BookmarkItem.of(
-                    bookmarkItem.groupId,
-                    bookmarkItem.itemStack,
-                    1,
-                    bookmarkItem.recipeId,
-                    isIngredient ? BookmarkItemType.INGREDIENT : BookmarkItemType.RESULT,
-                    Collections.emptyMap());
+
+            final BookmarkItem shadowBookmarkItem = BookmarkItem.builder(bookmarkItem.groupId, bookmarkItem.itemStack)
+                    .multiplier(1).factor(StackInfo.getAmount(bookmarkItem.itemStack)).recipeId(bookmarkItem.recipeId)
+                    .type(isIngredient ? BookmarkItemType.INGREDIENT : BookmarkItemType.RESULT)
+                    .permutations(Collections.emptyMap()).build();
 
             if ((absoluteSlotIndex = nextSlotIndex(
                     absoluteSlotIndex + 1,
diff --git a/src/main/java/codechicken/nei/bookmark/BookmarkItem.java b/src/main/java/codechicken/nei/bookmark/BookmarkItem.java
index e8b59cac..4be3defc 100644
--- a/src/main/java/codechicken/nei/bookmark/BookmarkItem.java
+++ b/src/main/java/codechicken/nei/bookmark/BookmarkItem.java
@@ -2,6 +2,7 @@ package codechicken.nei.bookmark;
 
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 
@@ -10,6 +11,7 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraftforge.fluids.FluidStack;
 
 import codechicken.nei.NEIClientUtils;
+import codechicken.nei.PositionedStack;
 import codechicken.nei.recipe.Recipe;
 import codechicken.nei.recipe.Recipe.RecipeId;
 import codechicken.nei.recipe.Recipe.RecipeIngredient;
@@ -17,6 +19,140 @@ import codechicken.nei.recipe.StackInfo;
 
 public class BookmarkItem {
 
+    public static class Builder {
+
+        private static Map<ItemStack, String> fuzzyPermutations = new HashMap<>();
+
+        private final int groupId;
+        private final ItemStack stack;
+        private long factor;
+        private long multiplier = -1;
+        private long chance = PositionedStack.CHANCE_FULL;
+        private RecipeId recipeId = null;
+        private Recipe recipe = null;
+        private BookmarkItemType type = BookmarkItemType.ITEM;
+        private Map<String, ItemStack> permutations = null;
+
+        private Builder(int groupId, ItemStack stack) {
+            final NBTTagCompound nbTag = StackInfo.itemStackToNBT(stack);
+
+            this.groupId = groupId;
+            this.stack = stack;
+            this.factor = nbTag.hasKey("gtFluidName") ? Math.min(144, nbTag.getInteger("Count")) : 1;
+        }
+
+        public Builder factor(long factor) {
+            this.factor = factor;
+            return this;
+        }
+
+        public Builder multiplier(long multiplier) {
+            this.multiplier = multiplier;
+            return this;
+        }
+
+        public Builder chance(long chance) {
+            this.chance = chance;
+            return this;
+        }
+
+        public Builder recipe(Recipe recipe) {
+            this.recipe = recipe;
+            this.recipeId = null;
+            return this;
+        }
+
+        public Builder recipeId(RecipeId recipeId) {
+            this.recipeId = recipeId;
+            this.recipe = null;
+            return this;
+        }
+
+        public Builder type(BookmarkItemType type) {
+            this.type = type;
+            return this;
+        }
+
+        public Builder permutations(Map<String, ItemStack> permutations) {
+            this.permutations = permutations;
+            return this;
+        }
+
+        public BookmarkItem build() {
+            final Map<String, ItemStack> perms;
+
+            if (this.permutations != null) {
+                perms = this.permutations;
+            } else if (this.type == BookmarkItemType.INGREDIENT) {
+
+                if (this.recipe != null) {
+                    perms = Builder.generatePermutations(this.stack, this.recipe);
+                } else if (this.recipeId != null) {
+                    perms = Builder.generatePermutations(this.stack, Recipe.of(this.recipeId));
+                } else {
+                    perms = Builder.generatePermutations(this.stack);
+                }
+
+            } else {
+                perms = Builder.generatePermutations(this.stack);
+            }
+
+            return new BookmarkItem(
+                    this.groupId,
+                    this.multiplier >= 0 ? this.multiplier : StackInfo.getAmount(this.stack) / this.factor,
+                    this.factor,
+                    this.chance,
+                    this.stack,
+                    perms,
+                    this.recipeId != null ? this.recipeId : this.recipe != null ? this.recipe.getRecipeId() : null,
+                    this.type);
+        }
+
+        public static Map<String, ItemStack> generatePermutations(ItemStack stack) {
+            return Collections.singletonMap(getItemGUID(stack), stack);
+        }
+
+        public static Map<String, ItemStack> generatePermutations(ItemStack stack, Recipe recipe) {
+
+            if (recipe != null) {
+                final RecipeIngredient ingr = recipe.getIngredients().stream()
+                        .filter(ingredient -> ingredient.contains(stack)).findAny().orElse(null);
+
+                if (ingr != null) {
+                    final Map<String, ItemStack> permutations = new HashMap<>();
+                    for (ItemStack ingrStack : ingr.getPermutations()) {
+                        permutations.put(getItemGUID(ingrStack), ingrStack);
+                    }
+                    return permutations;
+                }
+            }
+
+            return generatePermutations(stack);
+        }
+
+        private static synchronized String getItemGUID(ItemStack stack) {
+            final FluidStack fluidStack = StackInfo.getFluid(stack);
+
+            if (fluidStack != null) {
+                return fluidStack.getFluid().getName() + ":" + fluidStack.tag;
+            } else {
+
+                for (Map.Entry<ItemStack, String> entry : Builder.fuzzyPermutations.entrySet()) {
+                    if (NEIClientUtils.areStacksSameTypeCraftingWithNBT(stack, entry.getKey())) {
+                        Builder.fuzzyPermutations.put(stack, entry.getValue());
+                        return entry.getValue();
+                    }
+                }
+
+                final String stackGUID = StackInfo.getItemStackGUID(stack);
+                Builder.fuzzyPermutations.put(stack, stackGUID);
+
+                return stackGUID;
+            }
+        }
+
+    }
+
     public enum BookmarkItemType {
 
         INGREDIENT,
@@ -32,150 +168,128 @@ public class BookmarkItem {
         }
     }
 
-    private static Map<ItemStack, String> fuzzyPermutations = new HashMap<>();
-
     public int groupId;
 
-    public long amount = 0L;
-    public final int fluidCellAmount;
     public ItemStack itemStack;
     public Map<String, ItemStack> permutations;
 
-    public long factor;
     public RecipeId recipeId;
     public BookmarkItemType type = BookmarkItemType.ITEM;
 
-    protected BookmarkItem(int groupId, long amount, int fluidCellAmount, ItemStack itemStack,
-            Map<String, ItemStack> permutations, long factor, RecipeId recipeId, BookmarkItemType type) {
+    public long multiplier = 1L;
+    public final long factor;
+    public final int fluidCellAmount;
+    public final long chance;
+
+    protected BookmarkItem(int groupId, long multiplier, long factor, long chance, ItemStack itemStack,
+            Map<String, ItemStack> permutations, RecipeId recipeId, BookmarkItemType type) {
+        final FluidStack fluidStack = StackInfo.getFluid(itemStack);
+
+        if (fluidStack != null) {
+            this.fluidCellAmount = Math.max(1, StackInfo.isFluidContainer(itemStack) ? fluidStack.amount : 1);
+        } else {
+            this.fluidCellAmount = 1;
+        }
+
         this.groupId = groupId;
 
-        this.amount = amount;
-        this.fluidCellAmount = fluidCellAmount;
         this.itemStack = itemStack;
         this.permutations = permutations;
 
-        this.factor = factor;
         this.recipeId = recipeId;
         this.type = type == null ? BookmarkItemType.ITEM : type;
+
+        this.multiplier = multiplier;
+        this.factor = factor;
+        this.chance = chance;
     }
 
-    public static BookmarkItem of(int groupId, ItemStack stack, long factor, RecipeId recipeId, BookmarkItemType type,
-            Map<String, ItemStack> permutations) {
-        final FluidStack fluidStack = StackInfo.getFluid(stack);
-        int fluidCellAmount = 1;
-        long amount;
+    public static Builder builder(int groupId, ItemStack stack) {
+        return new Builder(groupId, stack);
+    }
 
-        if (fluidStack != null) {
-            amount = fluidStack.amount * (long) Math.max(0, stack.stackSize);
-            fluidCellAmount = Math.max(1, StackInfo.isFluidContainer(stack) ? fluidStack.amount : 1);
-        } else {
-            amount = StackInfo.getAmount(stack);
+    public static Builder builder(BookmarkItem item) {
+        return new Builder(item.groupId, item.itemStack).factor(item.factor).multiplier(item.multiplier)
+                .chance(item.chance).recipeId(item.recipeId).type(item.type).permutations(item.permutations);
+    }
+
+    public static Builder builder(int groupId, ItemStack stack, Recipe recipe, BookmarkItemType type) {
+        final List<RecipeIngredient> items = type == BookmarkItemType.RESULT ? recipe.getResults()
+                : recipe.getIngredients();
+        final Builder builder = builder(groupId, stack).type(type).recipe(recipe);
+        long amount = 0;
+
+        for (RecipeIngredient res : items) {
+            if (res.contains(stack)) {
+                amount += res.getAmount() * res.getChance();
+            }
         }
 
-        return new BookmarkItem(
-                groupId,
-                amount,
-                fluidCellAmount,
-                stack,
-                permutations,
-                factor * fluidCellAmount,
-                recipeId,
-                type);
-    }
+        if ((amount % PositionedStack.CHANCE_FULL) == 0) {
+            builder.factor(amount / PositionedStack.CHANCE_FULL);
+        } else {
+            builder.factor(1).chance(amount);
+        }
 
-    public static BookmarkItem of(int groupId, ItemStack stack, long factor, RecipeId recipeId, BookmarkItemType type) {
-        return of(
-                groupId,
-                stack,
-                factor,
-                recipeId,
-                type,
-                generatePermutations(stack, recipeId, type == BookmarkItemType.INGREDIENT));
+        return builder;
     }
 
     public static BookmarkItem of(int groupId, ItemStack stack) {
-        final NBTTagCompound nbTag = StackInfo.itemStackToNBT(stack);
-        final long factor = nbTag.hasKey("gtFluidName") ? Math.min(144, nbTag.getInteger("Count")) : 1;
-        return BookmarkItem.of(
-                groupId,
-                stack,
-                factor,
-                null,
-                BookmarkItemType.ITEM,
-                Collections.singletonMap(getItemGUID(stack), stack));
+        return builder(groupId, stack).build();
     }
 
-    public BookmarkItem copyWithAmount(long amount) {
+    public BookmarkItem copyWithMultiplier(long multiplier) {
         return new BookmarkItem(
                 this.groupId,
-                amount,
-                this.fluidCellAmount,
+                multiplier,
+                this.factor,
+                this.chance,
                 this.itemStack,
                 this.permutations,
-                this.factor,
                 this.recipeId,
                 this.type);
     }
 
+    public BookmarkItem copyWithAmount(long amount) {
+        return copyWithMultiplier(getMultiplierFromAmount(amount));
+    }
+
     public BookmarkItem copy() {
-        return copyWithAmount(this.amount);
-    }
-
-    public static Map<String, ItemStack> generatePermutations(ItemStack stack, RecipeId recipeId,
-            boolean isIngredient) {
-
-        if (isIngredient && recipeId != null) {
-            return generatePermutations(stack, Recipe.of(recipeId));
-        }
-
-        return Collections.singletonMap(getItemGUID(stack), stack);
-    }
-
-    public static Map<String, ItemStack> generatePermutations(ItemStack stack, Recipe recipe) {
-
-        if (recipe != null) {
-            final RecipeIngredient ingr = recipe.getIngredients().stream()
-                    .filter(ingredient -> ingredient.contains(stack)).findAny().orElse(null);
-
-            if (ingr != null) {
-                final Map<String, ItemStack> permutations = new HashMap<>();
-                for (ItemStack ingrStack : ingr.getPermutations()) {
-                    permutations.put(getItemGUID(ingrStack), ingrStack);
-                }
-                return permutations;
-            }
-        }
-
-        return Collections.singletonMap(getItemGUID(stack), stack);
-    }
-
-    private static synchronized String getItemGUID(ItemStack stack) {
-        final FluidStack fluidStack = StackInfo.getFluid(stack);
-
-        if (fluidStack != null) {
-            return fluidStack.getFluid().getName() + ":" + fluidStack.tag;
-        } else {
-
-            for (Map.Entry<ItemStack, String> entry : BookmarkItem.fuzzyPermutations.entrySet()) {
-                if (NEIClientUtils.areStacksSameTypeCraftingWithNBT(stack, entry.getKey())) {
-                    BookmarkItem.fuzzyPermutations.put(stack, entry.getValue());
-                    return entry.getValue();
-                }
-            }
-
-            final String stackGUID = StackInfo.getItemStackGUID(stack);
-            BookmarkItem.fuzzyPermutations.put(stack, stackGUID);
-
-            return stackGUID;
-        }
+        return copyWithMultiplier(this.multiplier);
     }
 
     public boolean containsItems(BookmarkItem item) {
         return this.permutations.keySet().stream().anyMatch(item.permutations::containsKey);
     }
 
+    public long getAmount() {
+        return getAmount(this.multiplier);
+    }
+
+    public long getAmount(long multiplier) {
+        long amount = this.factor * multiplier;
+
+        if (this.fluidCellAmount > 1) {
+            amount = amount * this.fluidCellAmount;
+        }
+
+        if (this.chance != PositionedStack.CHANCE_FULL) {
+
+            if (this.type == BookmarkItemType.INGREDIENT) {
+                // For ingredients, round up the expected amount to be conservative.
+                amount = (amount * this.chance + PositionedStack.CHANCE_FULL - 1) / PositionedStack.CHANCE_FULL;
+            } else {
+                // For results, round down the expected amount to be conservative.
+                amount = (amount * this.chance) / PositionedStack.CHANCE_FULL;
+            }
+
+        }
+
+        return amount;
+    }
+
     public ItemStack getItemStack() {
-        return getItemStack(this.amount);
+        return getItemStack(getAmount());
     }
 
     public ItemStack getItemStack(long amount) {
@@ -183,23 +297,34 @@ public class BookmarkItem {
     }
 
     public long getStackSize() {
-        return getStackSize(this.amount);
+        return getStackSize(getAmount());
     }
 
     public long getStackSize(long amount) {
-        return (long) (this.factor > 0 ? Math.ceil(amount / (double) this.fluidCellAmount) : 0);
+
+        if (this.fluidCellAmount > 1) {
+            amount = (amount + this.fluidCellAmount - 1) / this.fluidCellAmount;
+        }
+
+        return amount;
+    }
+
+    public long getMultiplierFromAmount(long amount) {
+        if (this.factor <= 0 || this.chance <= 0) return 0;
+
+        if (this.fluidCellAmount > 1) {
+            amount = (amount + this.fluidCellAmount - 1) / this.fluidCellAmount;
+        }
+
+        if (this.chance == PositionedStack.CHANCE_FULL) {
+            return (amount + this.factor - 1) / this.factor;
+        }
+
+        return (amount * PositionedStack.CHANCE_FULL + this.factor * this.chance - 1) / (this.factor * this.chance);
     }
 
     public long getMultiplier() {
-        return getMultiplier(this.amount);
-    }
-
-    public long getMultiplier(long amount) {
-        return (long) (this.factor > 0 ? Math.ceil(amount / (double) this.factor) : 0);
-    }
-
-    public long getFactor() {
-        return this.factor / this.fluidCellAmount;
+        return this.multiplier;
     }
 
     public boolean equalsRecipe(BookmarkItem meta) {
@@ -210,6 +335,10 @@ public class BookmarkItem {
         return groupId == this.groupId && recipeId != null && recipeId.equals(this.recipeId);
     }
 
+    public boolean emptyFactor() {
+        return this.factor <= 0 || this.chance <= 0;
+    }
+
     @Override
     public int hashCode() {
         return Objects.hash(this.groupId, this.fluidCellAmount, this.type.toInt(), this.recipeId);
diff --git a/src/main/java/codechicken/nei/bookmark/BookmarkStorage.java b/src/main/java/codechicken/nei/bookmark/BookmarkStorage.java
index b674cdb1..8dd05fbc 100644
--- a/src/main/java/codechicken/nei/bookmark/BookmarkStorage.java
+++ b/src/main/java/codechicken/nei/bookmark/BookmarkStorage.java
@@ -25,6 +25,7 @@ import com.google.gson.JsonSyntaxException;
 
 import codechicken.nei.BookmarkPanel.BookmarkViewMode;
 import codechicken.nei.NEIClientConfig;
+import codechicken.nei.PositionedStack;
 import codechicken.nei.bookmark.BookmarkItem.BookmarkItemType;
 import codechicken.nei.recipe.Recipe.RecipeId;
 import codechicken.nei.recipe.StackInfo;
@@ -249,30 +250,36 @@ public class BookmarkStorage {
         ItemStack itemStack = StackInfo.loadFromNBT(itemStackNBT);
 
         if (itemStack != null) {
-            RecipeId recipeId = null;
-            boolean isFluid = itemStackNBT.hasKey("gtFluidName");
-            int groupId = jsonObject.has("groupId") ? jsonObject.get("groupId").getAsInt()
+            int groupId = jsonObject.has("groupId") && grid.groups.containsKey(jsonObject.get("groupId").getAsInt())
+                    ? jsonObject.get("groupId").getAsInt()
                     : BookmarkGrid.DEFAULT_GROUP_ID;
-            int factor = jsonObject.has("factor") ? Math.abs(jsonObject.get("factor").getAsInt()) : (isFluid ? 144 : 1);
-            BookmarkItemType type = jsonObject.has("type") ? BookmarkItemType.fromInt(jsonObject.get("type").getAsInt())
-                    : null;
+            final BookmarkItem.Builder builder = BookmarkItem.builder(groupId, itemStack);
 
-            if (type == null) {
-                // old format
-                type = jsonObject.has("ingredient") && jsonObject.get("ingredient").getAsBoolean()
-                        ? BookmarkItemType.INGREDIENT
-                        : BookmarkItemType.RESULT;
+            if (jsonObject.has("type")) {
+                builder.type(BookmarkItemType.fromInt(jsonObject.get("type").getAsInt()));
+            } else if (jsonObject.has("ingredient") && jsonObject.get("ingredient").getAsBoolean()) {
+                builder.type(BookmarkItemType.INGREDIENT);
+            } else {
+                builder.type(BookmarkItemType.RESULT);
+            }
+
+            if (jsonObject.has("multiplier")) {
+                builder.multiplier(jsonObject.get("multiplier").getAsInt());
+            }
+
+            if (jsonObject.has("factor")) {
+                builder.factor(jsonObject.get("factor").getAsInt());
+            }
+
+            if (jsonObject.has("chance")) {
+                builder.chance(jsonObject.get("chance").getAsInt());
             }
 
             if (jsonObject.get("recipeId") instanceof JsonObject recipeJson) {
-                recipeId = RecipeId.of(recipeJson);
+                builder.recipeId(RecipeId.of(recipeJson));
             }
 
-            if (!grid.groups.containsKey(groupId)) {
-                groupId = BookmarkGrid.DEFAULT_GROUP_ID;
-            }
-
-            grid.addItem(BookmarkItem.of(groupId, itemStack, factor, recipeId, type), false);
+            grid.addItem(builder.build(), false);
         }
 
         return itemStack != null;
@@ -321,7 +328,8 @@ public class BookmarkStorage {
                     JsonObject row = new JsonObject();
 
                     row.add("item", NBTJson.toJsonObject(StackInfo.itemStackToNBT(item.getItemStack())));
-                    row.add("factor", new JsonPrimitive(item.getFactor()));
+                    row.add("multiplier", new JsonPrimitive(item.multiplier));
+                    row.add("factor", new JsonPrimitive(item.factor));
                     row.add("type", new JsonPrimitive(item.type.toInt()));
 
                     if (item.groupId != BookmarkGrid.DEFAULT_GROUP_ID) {
@@ -332,6 +340,10 @@ public class BookmarkStorage {
                         row.add("recipeId", item.recipeId.toJsonObject());
                     }
 
+                    if (item.chance != PositionedStack.CHANCE_FULL) {
+                        row.add("chance", new JsonPrimitive(item.chance));
+                    }
+
                     strings.add(NBTJson.toJson(row));
                 } catch (JsonSyntaxException e) {
                     NEIClientConfig.logger.error("Failed to stringify bookmarked ItemStack to json string");
diff --git a/src/main/java/codechicken/nei/bookmark/BookmarksGridSlot.java b/src/main/java/codechicken/nei/bookmark/BookmarksGridSlot.java
index 67bb2302..de46c3bd 100644
--- a/src/main/java/codechicken/nei/bookmark/BookmarksGridSlot.java
+++ b/src/main/java/codechicken/nei/bookmark/BookmarksGridSlot.java
@@ -14,6 +14,7 @@ import codechicken.nei.ItemsGrid.MouseContext;
 import codechicken.nei.NEIClientConfig;
 import codechicken.nei.NEIClientUtils;
 import codechicken.nei.NEIClientUtils.Alignment;
+import codechicken.nei.PositionedStack;
 import codechicken.nei.bookmark.BookmarkGrid.BookmarkMouseContext;
 import codechicken.nei.bookmark.BookmarkItem.BookmarkItemType;
 import codechicken.nei.bookmark.RecipeChainDetails.CalculatedType;
@@ -83,8 +84,8 @@ public class BookmarksGridSlot extends ItemsGridSlot {
         this.isOutputRecipe = group.crafting != null && group.crafting.outputRecipes.contains(bookmarkItem.recipeId);
         this.isFluidDisplay = StackInfo.itemStackToNBT(bookmarkItem.itemStack).hasKey("gtFluidName");
 
-        this.realMultiplier = bookmarkItem.getMultiplier(realAmount);
-        this.calculatedMultiplier = bookmarkItem.getMultiplier(calculatedAmount);
+        this.realMultiplier = bookmarkItem.getMultiplierFromAmount(realAmount);
+        this.calculatedMultiplier = bookmarkItem.getMultiplierFromAmount(calculatedAmount);
 
         if (this.group.crafting != null && this.group.crafting.calculatedItems.containsKey(this.itemIndex)) {
             this.realType = this.group.crafting.calculatedItems.get(this.itemIndex).calculatedType
@@ -355,9 +356,10 @@ public class BookmarksGridSlot extends ItemsGridSlot {
             amount = this.shiftAmount;
         }
 
-        if (amount > 0 || shownItemType == ShownItemType.REAL && this.bookmarkItem.factor > 0) {
+        if (amount > 0 || shownItemType == ShownItemType.REAL && !this.bookmarkItem.emptyFactor()) {
             final float panelFactor = (rect.w - 2) / (DEFAULT_SLOT_SIZE - 2);
             final long stackSize = this.bookmarkItem.getStackSize(amount);
+            int color = 0xFFFFFF;
             String amountString = "";
 
             if (stackSize < 10_000) {
@@ -370,11 +372,16 @@ public class BookmarksGridSlot extends ItemsGridSlot {
                 amountString += "L";
             }
 
+            if (this.bookmarkItem.chance != PositionedStack.CHANCE_FULL) {
+                amountString = "~" + amountString;
+                color = 0xFFAA00;
+            }
+
             NEIClientUtils.drawNEIOverlayText(
                     amountString,
                     new Rectangle4i(rect.x + 1, rect.y + 1, rect.w - 2, rect.h - 2),
                     panelFactor,
-                    0xFFFFFF,
+                    color,
                     true,
                     this.isFluidDisplay ? Alignment.BottomLeft : Alignment.BottomRight);
         }
diff --git a/src/main/java/codechicken/nei/bookmark/RecipeChainDetails.java b/src/main/java/codechicken/nei/bookmark/RecipeChainDetails.java
index e73a68de..45f84940 100644
--- a/src/main/java/codechicken/nei/bookmark/RecipeChainDetails.java
+++ b/src/main/java/codechicken/nei/bookmark/RecipeChainDetails.java
@@ -62,14 +62,15 @@ public class RecipeChainDetails {
         }
 
         public static BookmarkChainItem of(BookmarkItem item, long shiftItem, CalculatedType calculatedType) {
-            return new BookmarkChainItem(item, shiftItem, item.amount, calculatedType);
+            return new BookmarkChainItem(item, shiftItem, item.getAmount(), calculatedType);
         }
 
         public static BookmarkChainItem of(BookmarkItem item) {
+            final long amount = item.getAmount();
             return new BookmarkChainItem(
                     item,
-                    item.amount,
-                    item.amount,
+                    amount,
+                    amount,
                     item.type == BookmarkItemType.INGREDIENT ? CalculatedType.INGREDIENT : CalculatedType.RESULT);
         }
 
@@ -100,7 +101,7 @@ public class RecipeChainDetails {
         public void append(long amount, long calculatedAmount) {
             this.shiftAmount += amount;
             this.calculatedAmount += calculatedAmount;
-            this.item.amount = this.calculatedAmount;
+            this.item.multiplier = this.item.getMultiplierFromAmount(this.calculatedAmount);
         }
     }
 
@@ -181,9 +182,9 @@ public class RecipeChainDetails {
                 final BookmarkItem item = entry.getValue();
                 if (this.recipeInMiddle.contains(item.recipeId)) {
                     this.calculatedItems.get(itemIndex)
-                            .setRealAmount(Math.max(0, item.factor * (item.getMultiplier() - 1)));
+                            .setRealAmount(Math.max(0, item.getAmount(item.getMultiplier() - 1)));
                 } else {
-                    this.calculatedItems.get(itemIndex).setRealAmount(item.amount);
+                    this.calculatedItems.get(itemIndex).setRealAmount(item.getAmount());
                 }
             }
         }
@@ -239,7 +240,7 @@ public class RecipeChainDetails {
 
         for (BookmarkItem item : chainItems) {
             if (recipeRelations.contains(item.recipeId)) {
-                subChainItems.add(item.copyWithAmount(recipeId.equals(item.recipeId) ? item.amount : 0));
+                subChainItems.add(item.copyWithMultiplier(recipeId.equals(item.recipeId) ? item.multiplier : 0));
             }
         }
 
@@ -272,14 +273,14 @@ public class RecipeChainDetails {
         for (RecipeId relRecipeId : recipeRelations) {
             for (BookmarkItem item : math.recipeResults) {
                 if (item.recipeId.equals(relRecipeId)) {
-                    final long amount = item.amount - math.requiredAmount.getOrDefault(item, 0L);
+                    final long amount = item.getAmount() - math.requiredAmount.getOrDefault(item, 0L);
 
                     if (item.recipeId.equals(recipeId)) {
                         multiplier.put(item.recipeId, item.getMultiplier());
                         items.computeIfAbsent(
                                 StackInfo.getItemStackGUID(item.itemStack),
                                 is -> BookmarkChainItem.of(item, 0, 0, CalculatedType.RESULT))
-                                .append(amount, item.amount);
+                                .append(amount, item.getAmount());
                     } else if (amount > 0) {
                         items.computeIfAbsent(
                                 StackInfo.getItemStackGUID(item.itemStack),
@@ -292,17 +293,17 @@ public class RecipeChainDetails {
                 if (item.recipeId.equals(relRecipeId)) {
                     final BookmarkItem prefItem = math.preferredItems.get(item);
                     final long amount = math.requiredAmount.containsKey(prefItem) ? 0
-                            : math.requiredAmount.getOrDefault(item, item.amount);
+                            : math.requiredAmount.getOrDefault(item, item.getAmount());
                     final long refAmount = prefItem != null && !topLevelRecipes.contains(prefItem.recipeId)
                             ? math.requiredAmount.getOrDefault(prefItem, 0L)
                             : 0;
 
-                    if (amount != 0 || item.amount > refAmount && math.requiredAmount.containsKey(prefItem)
+                    if (amount != 0 || item.getAmount() > refAmount && math.requiredAmount.containsKey(prefItem)
                             || recipeId.equals(item.recipeId) && multiplier.get(recipeId) == 0) {
                         items.computeIfAbsent(
                                 StackInfo.getItemStackGUID(item.itemStack),
                                 is -> BookmarkChainItem.of(item, 0, 0, CalculatedType.INGREDIENT))
-                                .append(amount, item.amount - refAmount);
+                                .append(amount, item.getAmount() - refAmount);
                     }
                 }
             }
@@ -312,7 +313,7 @@ public class RecipeChainDetails {
     }
 
     private void generateResult(RecipeChainMath math, BookmarkItem item, int itemIndex) {
-        final long amount = item.amount - math.requiredAmount.getOrDefault(item, 0L);
+        final long amount = item.getAmount() - math.requiredAmount.getOrDefault(item, 0L);
         final CalculatedType calculatedType = math.outputRecipes.containsKey(item.recipeId) ? CalculatedType.RESULT
                 : CalculatedType.REMAINDER;
 
@@ -322,7 +323,7 @@ public class RecipeChainDetails {
     private void generateIngredient(RecipeChainMath math, BookmarkItem item, int itemIndex) {
         final BookmarkItem prefItem = math.preferredItems.get(item);
         final long amount = math.requiredAmount.containsKey(prefItem) ? 0
-                : math.requiredAmount.getOrDefault(item, item.amount);
+                : math.requiredAmount.getOrDefault(item, item.getAmount());
 
         this.calculatedItems.put(itemIndex, BookmarkChainItem.of(item, amount, CalculatedType.INGREDIENT));
     }
diff --git a/src/main/java/codechicken/nei/recipe/AutoCraftingManager.java b/src/main/java/codechicken/nei/recipe/AutoCraftingManager.java
index 7c38dd5d..0717c3db 100644
--- a/src/main/java/codechicken/nei/recipe/AutoCraftingManager.java
+++ b/src/main/java/codechicken/nei/recipe/AutoCraftingManager.java
@@ -91,7 +91,7 @@ public class AutoCraftingManager {
 
             for (BookmarkItem item : math.initialItems) {
                 final long invStackSize = inventory.getOrDefault(item.itemStack, 0L);
-                final long amount = Math.max(0, item.amount - invStackSize * item.fluidCellAmount);
+                final long amount = Math.max(0, item.getAmount() - invStackSize * item.fluidCellAmount);
                 if (amount > 0) {
                     initialItems.add(item.copyWithAmount(amount));
                 }
diff --git a/src/main/java/codechicken/nei/recipe/GuiRecipe.java b/src/main/java/codechicken/nei/recipe/GuiRecipe.java
index 771d54b5..78e54db1 100644
--- a/src/main/java/codechicken/nei/recipe/GuiRecipe.java
+++ b/src/main/java/codechicken/nei/recipe/GuiRecipe.java
@@ -899,12 +899,15 @@ public abstract class GuiRecipe<H extends IRecipeHandler> extends GuiContainer i
     }
 
     private String getHandlerTitleColorCode(boolean hovered) {
-        final String key = hovered ? "recipe.title.color.hover" : "recipe.title.color.normal";
-        final String translated = NEIClientUtils.translate(key);
-        if (!translated.startsWith("nei.")) { // Optional localization string for resource packs
-            return translated;
+
+        if (hovered) {
+            return NEIClientUtils
+                    .getTextColorOrDefault("recipe.title.color.hover", EnumChatFormatting.YELLOW.toString());
+        } else {
+            return NEIClientUtils
+                    .getTextColorOrDefault("recipe.title.color.normal", EnumChatFormatting.WHITE.toString());
         }
-        return hovered ? EnumChatFormatting.YELLOW.toString() : EnumChatFormatting.WHITE.toString();
+
     }
 
     @Override
diff --git a/src/main/java/codechicken/nei/recipe/NEIRecipeWidget.java b/src/main/java/codechicken/nei/recipe/NEIRecipeWidget.java
index 972d2fdc..b88b1be7 100644
--- a/src/main/java/codechicken/nei/recipe/NEIRecipeWidget.java
+++ b/src/main/java/codechicken/nei/recipe/NEIRecipeWidget.java
@@ -1,6 +1,7 @@
 package codechicken.nei.recipe;
 
 import java.awt.Point;
+import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -21,9 +22,11 @@ import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL12;
 
 import codechicken.lib.gui.GuiDraw;
+import codechicken.lib.vec.Rectangle4i;
 import codechicken.nei.FavoriteRecipes;
 import codechicken.nei.NEIClientConfig;
 import codechicken.nei.NEIClientUtils;
+import codechicken.nei.NEIClientUtils.Alignment;
 import codechicken.nei.NEIServerUtils;
 import codechicken.nei.PositionedStack;
 import codechicken.nei.Widget;
@@ -37,9 +40,12 @@ import codechicken.nei.util.NEIMouseUtils;
 
 public class NEIRecipeWidget extends Widget {
 
+    private static final DecimalFormat chanceFormat = new DecimalFormat("##0.##%");
     protected AcceptsFollowingTooltipLineHandler acceptsFollowingTooltipLineHandler;
     protected final Map<PositionedStack, Integer> favoriteIndexes = new WeakHashMap<>();
     protected final Map<PositionedStack, List<ItemStack>> permutations = new WeakHashMap<>();
+    protected final Map<PositionedStack, String> chances = new WeakHashMap<>();
+    protected int chanceColor = 0xFDD835;
     protected int favoriteRevision = -1;
     protected boolean update = true;
     protected int cycleticks = 0;
@@ -54,9 +60,20 @@ public class NEIRecipeWidget extends Widget {
     public NEIRecipeWidget(RecipeHandlerRef handlerRef) {
         this.handlerRef = handlerRef;
         this.handlerInfo = GuiRecipeTab.getHandlerInfo(this.handlerRef.handler);
+        this.chanceColor = getHexValue(
+                NEIClientUtils.getTextColorOrDefault("recipe.overlay.chance", "0xFDD835"),
+                this.chanceColor);
         update();
     }
 
+    private int getHexValue(String color, int defaultValue) {
+        try {
+            return (int) Long.parseLong(color.replace("0x", ""), 16);
+        } catch (NumberFormatException e) {
+            return defaultValue;
+        }
+    }
+
     public void setLocation(int x, int y) {
         this.x = x;
         this.y = y;
@@ -196,11 +213,7 @@ public class NEIRecipeWidget extends Widget {
                 updatePermutationsFor(pStack);
             }
 
-            GuiContainerManager.drawItem(pStack.relx, pStack.rely, pStack.item);
-
-            if (pStack.contains(mouseX - this.x, mouseY - this.y - yShift)) {
-                NEIClientUtils.gl2DRenderContext(() -> GuiDraw.drawRect(pStack.relx, pStack.rely, 16, 16, 0x80FFFFFF));
-            }
+            drawItem(pStack, mouseX, mouseY, yShift);
         }
 
         for (PositionedStack pStack : getCatalysts()) {
@@ -209,19 +222,11 @@ public class NEIRecipeWidget extends Widget {
                 updatePermutationsFor(pStack);
             }
 
-            GuiContainerManager.drawItem(pStack.relx, pStack.rely, pStack.item);
-
-            if (pStack.contains(mouseX - this.x, mouseY - this.y - yShift)) {
-                NEIClientUtils.gl2DRenderContext(() -> GuiDraw.drawRect(pStack.relx, pStack.rely, 16, 16, 0x80FFFFFF));
-            }
+            drawItem(pStack, mouseX, mouseY, yShift);
         }
 
         for (PositionedStack pStack : getOutputs()) {
-            GuiContainerManager.drawItem(pStack.relx, pStack.rely, pStack.item);
-
-            if (pStack.contains(mouseX - this.x, mouseY - this.y - yShift)) {
-                NEIClientUtils.gl2DRenderContext(() -> GuiDraw.drawRect(pStack.relx, pStack.rely, 16, 16, 0x80FFFFFF));
-            }
+            drawItem(pStack, mouseX, mouseY, yShift);
         }
 
         GuiContainerManager.disableMatrixStackLogging();
@@ -255,6 +260,41 @@ public class NEIRecipeWidget extends Widget {
         DebugHandlerWidget.instance.drawGuiPlaceholder(this);
     }
 
+    protected void drawItem(PositionedStack pStack, int mouseX, int mouseY, int yShift) {
+        GuiContainerManager.drawItem(pStack.relx, pStack.rely, pStack.item);
+
+        if (NEIClientConfig.showRecipeItemChances()) {
+            final String chanceText = this.chances.computeIfAbsent(pStack, k -> getChanceText(k));
+
+            if (!chanceText.isEmpty()) {
+                NEIClientUtils.drawNEIOverlayText(
+                        chanceText,
+                        new Rectangle4i(pStack.relx, pStack.rely, 16, 16),
+                        0.5f,
+                        this.chanceColor,
+                        true,
+                        Alignment.TopLeft);
+            }
+        }
+
+        if (pStack.contains(mouseX - this.x, mouseY - this.y - yShift)) {
+            NEIClientUtils.gl2DRenderContext(() -> GuiDraw.drawRect(pStack.relx, pStack.rely, 16, 16, 0x80FFFFFF));
+        }
+    }
+
+    protected String getChanceText(PositionedStack pStack) {
+
+        if (StackInfo.getAmount(pStack.item) == 0) { // not consumed
+            return NEIClientUtils.translate("recipe.chance.nc");
+        } else if (pStack.getChance() == 0) { // not consumed parallel
+            return NEIClientUtils.translate("recipe.chance.ncp");
+        } else if (pStack.getChance() != PositionedStack.CHANCE_FULL) { // chance based
+            return chanceFormat.format(pStack.getChance() / (float) PositionedStack.CHANCE_FULL);
+        }
+
+        return "";
+    }
+
     @Override
     public boolean handleKeyPress(int keyID, char keyChar) {
 
diff --git a/src/main/java/codechicken/nei/recipe/Recipe.java b/src/main/java/codechicken/nei/recipe/Recipe.java
index 63c96e22..203cd3c7 100644
--- a/src/main/java/codechicken/nei/recipe/Recipe.java
+++ b/src/main/java/codechicken/nei/recipe/Recipe.java
@@ -282,17 +282,20 @@ public class Recipe {
 
         protected final ItemStack[] items;
         protected int activeIndex = 0;
+
         protected int amount = 0;
+        protected int chance = PositionedStack.CHANCE_FULL;
 
         protected int relx;
         protected int rely;
 
-        public RecipeIngredient(int relx, int rely, List<ItemStack> items, int activeIndex) {
+        public RecipeIngredient(int relx, int rely, List<ItemStack> items, int chance, int activeIndex) {
             this.items = items.stream().map(ItemStack::copy).toArray(size -> new ItemStack[size]);
             this.amount = StackInfo.getAmount(this.items[activeIndex]);
             this.activeIndex = activeIndex;
             this.relx = relx;
             this.rely = rely;
+            this.chance = chance;
         }
 
         public static RecipeIngredient of(PositionedStack positionedStack) {
@@ -311,17 +314,21 @@ public class Recipe {
                 }
             }
 
-            return of(positionedStack.relx, positionedStack.rely, stacks, activeIndex);
+            return of(positionedStack.relx, positionedStack.rely, stacks, positionedStack.getChance(), activeIndex);
         }
 
-        public static RecipeIngredient of(int relx, int rely, List<ItemStack> stacks, int activeIndex) {
-            return new RecipeIngredient(relx, rely, stacks, activeIndex);
+        public static RecipeIngredient of(int relx, int rely, List<ItemStack> stacks, int chance, int activeIndex) {
+            return new RecipeIngredient(relx, rely, stacks, chance, activeIndex);
         }
 
         public int getAmount() {
             return this.amount;
         }
 
+        public int getChance() {
+            return this.chance;
+        }
+
         public ItemStack getItemStack() {
             return this.items[this.activeIndex];
         }
@@ -348,11 +355,16 @@ public class Recipe {
             return this;
         }
 
+        public void setChance(int chance) {
+            this.chance = chance;
+        }
+
         public RecipeIngredient copy() {
             return new RecipeIngredient(
                     this.relx,
                     this.rely,
                     getPermutations().stream().map(ItemStack::copy).collect(Collectors.toList()),
+                    this.chance,
                     this.activeIndex);
         }
     }
@@ -435,7 +447,7 @@ public class Recipe {
         }
 
         if (item instanceof ItemStack stack) {
-            return RecipeIngredient.of(0, 0, Arrays.asList(stack), 0);
+            return RecipeIngredient.of(0, 0, Arrays.asList(stack), PositionedStack.CHANCE_FULL, 0);
         }
 
         if (item instanceof RecipeIngredient ingr) {
diff --git a/src/main/java/codechicken/nei/recipe/chain/RecipeChainIterator.java b/src/main/java/codechicken/nei/recipe/chain/RecipeChainIterator.java
index 960ae336..e1ccc942 100644
--- a/src/main/java/codechicken/nei/recipe/chain/RecipeChainIterator.java
+++ b/src/main/java/codechicken/nei/recipe/chain/RecipeChainIterator.java
@@ -49,9 +49,9 @@ public class RecipeChainIterator implements Iterator<Map<RecipeId, Long>> {
         final Set<RecipeId> skipRecipes = new HashSet<>();
         final Map<RecipeId, Long> rootRecipes = new HashMap<>();
         final HashMap<BookmarkItem, BookmarkItem> preferredItems = new HashMap<>(this.math.preferredItems);
-        preferredItems.values()
-                .removeIf(item -> item == null || item.amount == 0 || this.precessedRecipes.contains(item.recipeId));
-        preferredItems.keySet().removeIf(item -> item.amount == 0);
+        preferredItems.values().removeIf(
+                item -> item == null || item.getAmount() == 0 || this.precessedRecipes.contains(item.recipeId));
+        preferredItems.keySet().removeIf(item -> item.getAmount() == 0);
 
         for (Map.Entry<BookmarkItem, BookmarkItem> entry : preferredItems.entrySet()) {
             final BookmarkItem keyItem = entry.getKey();
diff --git a/src/main/java/codechicken/nei/recipe/chain/RecipeChainMath.java b/src/main/java/codechicken/nei/recipe/chain/RecipeChainMath.java
index 17bf778c..3b87e167 100644
--- a/src/main/java/codechicken/nei/recipe/chain/RecipeChainMath.java
+++ b/src/main/java/codechicken/nei/recipe/chain/RecipeChainMath.java
@@ -14,6 +14,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 
 import codechicken.nei.ItemStackAmount;
+import codechicken.nei.ItemStackSet;
 import codechicken.nei.NEIClientUtils;
 import codechicken.nei.bookmark.BookmarkItem;
 import codechicken.nei.bookmark.BookmarkItem.BookmarkItemType;
@@ -48,6 +49,7 @@ public class RecipeChainMath {
     public final List<BookmarkItem> recipeResults = new ArrayList<>();
 
     public final Map<BookmarkItem, BookmarkItem> preferredItems = new HashMap<>();
+
     public final Map<BookmarkItem, Long> requiredAmount = new HashMap<>();
     public final List<ItemStack> containerItems = new ArrayList<>();
     private final List<ItemStack> containerItemsBlacklist = new ArrayList<>();
@@ -59,9 +61,9 @@ public class RecipeChainMath {
             if (item.recipeId == null || item.type == BookmarkItemType.ITEM) {
                 this.initialItems.add(item.copy());
             } else if (item.type == BookmarkItemType.INGREDIENT) {
-                this.recipeIngredients.add(item.copyWithAmount(0));
+                this.recipeIngredients.add(item.copyWithMultiplier(0));
             } else {
-                this.recipeResults.add(item.copyWithAmount(0));
+                this.recipeResults.add(item.copyWithMultiplier(0));
                 multipliers.put(
                         item.recipeId,
                         Math.max(multipliers.getOrDefault(item.recipeId, 0L), item.getMultiplier()));
@@ -129,17 +131,18 @@ public class RecipeChainMath {
         visited.add(recipeId);
 
         for (BookmarkItem ingrItem : this.recipeIngredients) {
-            if (ingrItem.factor > 0 && recipeId.equals(ingrItem.recipeId) && !preferredItems.containsKey(ingrItem)) {
+            if (!ingrItem.emptyFactor() && recipeId.equals(ingrItem.recipeId)
+                    && !preferredItems.containsKey(ingrItem)) {
                 BookmarkItem activeItem = null;
                 BookmarkItem prefItem = null;
 
                 for (BookmarkItem item : this.recipeResults) {
-                    if (item.factor > 0 && !visited.contains(item.recipeId) && item.containsItems(ingrItem)) {
+                    if (!item.emptyFactor() && !visited.contains(item.recipeId) && item.containsItems(ingrItem)) {
 
-                        if ((activeItem == null || item.factor > activeItem.factor) && NEIClientUtils
+                        if ((activeItem == null || item.getAmount(1) > activeItem.getAmount(1)) && NEIClientUtils
                                 .areStacksSameTypeCraftingWithNBT(ingrItem.itemStack, item.itemStack)) {
                             activeItem = item;
-                        } else if (prefItem == null || item.factor > prefItem.factor) {
+                        } else if (prefItem == null || item.getAmount(1) > prefItem.getAmount(1)) {
                             prefItem = item;
                         }
 
@@ -164,7 +167,7 @@ public class RecipeChainMath {
         int maxDepth = 0;
 
         for (BookmarkItem ingrItem : preferredItems.keySet()) {
-            if (ingrItem.factor > 0 && recipeId.equals(ingrItem.recipeId)) {
+            if (!ingrItem.emptyFactor() && recipeId.equals(ingrItem.recipeId)) {
                 maxDepth = Math.max(maxDepth, getMaxDepth(preferredItems.get(ingrItem).recipeId, preferredItems) + 1);
             }
         }
@@ -176,7 +179,7 @@ public class RecipeChainMath {
         visited.add(recipeId);
 
         for (BookmarkItem ingrItem : this.recipeIngredients) {
-            if (ingrItem.factor > 0 && recipeId.equals(ingrItem.recipeId) && preferredItems.containsKey(ingrItem)) {
+            if (!ingrItem.emptyFactor() && recipeId.equals(ingrItem.recipeId) && preferredItems.containsKey(ingrItem)) {
                 BookmarkItem prefItem = preferredItems.get(ingrItem);
 
                 if (visited.contains(prefItem.recipeId)) {
@@ -184,6 +187,7 @@ public class RecipeChainMath {
                 } else {
                     removeLoop(prefItem.recipeId, preferredItems, visited);
                 }
+
             }
         }
 
@@ -195,22 +199,22 @@ public class RecipeChainMath {
 
         for (BookmarkItem item : this.recipeResults) {
             if (this.outputRecipes.containsKey(item.recipeId) && !ROOT_RECIPE_ID.equals(item.recipeId)) {
-                final long amount = item.factor * this.outputRecipes.get(item.recipeId);
+                final long multiplier = this.outputRecipes.get(item.recipeId);
+                final long amount = item.getAmount(multiplier);
                 rootIngredients.add(
-                        BookmarkItem.of(
-                                -1,
-                                item.getItemStack(amount),
-                                item.getStackSize(amount),
-                                ROOT_RECIPE_ID,
-                                BookmarkItemType.INGREDIENT,
-                                BookmarkItem.generatePermutations(item.itemStack, null)));
+                        BookmarkItem.builder(-1, item.getItemStack(amount)).factor(item.getStackSize(amount))
+                                .permutations(BookmarkItem.Builder.generatePermutations(item.itemStack))
+                                .recipeId(ROOT_RECIPE_ID).type(BookmarkItemType.INGREDIENT).build());
+
             }
         }
 
         this.outputRecipes.clear();
         this.outputRecipes.put(ROOT_RECIPE_ID, 1L);
         this.recipeResults.removeIf(item -> ROOT_RECIPE_ID.equals(item.recipeId));
-        this.recipeResults.add(BookmarkItem.of(-1, ROOT_ITEM, 1, ROOT_RECIPE_ID, BookmarkItemType.RESULT));
+        this.recipeResults.add(
+                BookmarkItem.builder(-1, ROOT_ITEM).factor(1).recipeId(ROOT_RECIPE_ID).type(BookmarkItemType.RESULT)
+                        .build());
         this.recipeIngredients.addAll(rootIngredients);
 
         return ROOT_RECIPE_ID;
@@ -226,24 +230,20 @@ public class RecipeChainMath {
 
     public static RecipeChainMath of(Recipe recipe, long multiplier) {
         final List<BookmarkItem> chainItems = new ArrayList<>();
-        final RecipeId recipeId = recipe.getRecipeId();
         final ItemStack result = recipe.getResult();
+        final ItemStackSet ingredients = new ItemStackSet();
 
-        chainItems.add(BookmarkItem.of(-1, result, StackInfo.getAmount(result), recipeId, BookmarkItemType.RESULT));
+        chainItems
+                .add(BookmarkItem.builder(-1, result, recipe, BookmarkItemType.RESULT).multiplier(multiplier).build());
 
         for (RecipeIngredient ingr : recipe.getIngredients()) {
-            chainItems.add(
-                    BookmarkItem.of(
-                            -1,
-                            ingr.getItemStack(),
-                            ingr.getAmount(),
-                            recipeId,
-                            BookmarkItemType.INGREDIENT,
-                            BookmarkItem.generatePermutations(ingr.getItemStack(), recipe)));
+            ingredients.add(ingr.getItemStack());
         }
 
-        for (BookmarkItem item : chainItems) {
-            item.amount *= multiplier;
+        for (ItemStack ingrStack : ingredients.values()) {
+            chainItems.add(
+                    BookmarkItem.builder(-1, ingrStack, recipe, BookmarkItemType.INGREDIENT).multiplier(multiplier)
+                            .build());
         }
 
         return new RecipeChainMath(chainItems, Collections.emptySet());
@@ -253,7 +253,7 @@ public class RecipeChainMath {
         final ItemStackAmount missedItems = new ItemStackAmount();
 
         for (BookmarkItem item : this.recipeResults) {
-            long amount = item.amount - this.requiredAmount.getOrDefault(item, 0L);
+            long amount = item.getAmount() - this.requiredAmount.getOrDefault(item, 0L);
             if (amount > 0) {
                 missedItems.add(item.getItemStack(amount));
             }
@@ -261,7 +261,7 @@ public class RecipeChainMath {
 
         for (BookmarkItem item : this.recipeIngredients) {
             long amount = this.requiredAmount.containsKey(this.preferredItems.get(item)) ? 0
-                    : this.requiredAmount.getOrDefault(item, item.amount);
+                    : this.requiredAmount.getOrDefault(item, item.getAmount());
             if (amount > 0) {
                 missedItems.add(item.getItemStack(amount));
             }
@@ -279,11 +279,11 @@ public class RecipeChainMath {
     private void resetCalculation() {
 
         for (BookmarkItem item : this.recipeIngredients) {
-            item.amount = 0;
+            item.multiplier = 0;
         }
 
         for (BookmarkItem item : this.recipeResults) {
-            item.amount = 0;
+            item.multiplier = 0;
         }
 
         this.preferredItems.clear();
@@ -313,8 +313,8 @@ public class RecipeChainMath {
         }
 
         for (BookmarkItem prefItem : this.recipeResults) {
-            if (prefItem.factor > 0 && this.outputRecipes.containsKey(prefItem.recipeId)) {
-                final long prefAmount = prefItem.factor * this.outputRecipes.get(prefItem.recipeId);
+            if (!prefItem.emptyFactor() && this.outputRecipes.containsKey(prefItem.recipeId)) {
+                final long prefAmount = prefItem.getAmount(this.outputRecipes.get(prefItem.recipeId));
 
                 if (prefItem.itemStack.getItem().hasContainerItem(prefItem.itemStack)) {
                     this.containerItemsBlacklist.add(prefItem.itemStack);
@@ -327,9 +327,9 @@ public class RecipeChainMath {
         }
 
         for (BookmarkItem prefItem : this.recipeResults) {
-            if (prefItem.factor > 0 && this.outputRecipes.containsKey(prefItem.recipeId)
+            if (!prefItem.emptyFactor() && this.outputRecipes.containsKey(prefItem.recipeId)
                     && this.requiredAmount.containsKey(prefItem)) {
-                final long prefAmount = prefItem.factor * this.outputRecipes.get(prefItem.recipeId);
+                final long prefAmount = prefItem.getAmount(this.outputRecipes.get(prefItem.recipeId));
                 this.requiredAmount.put(prefItem, this.requiredAmount.get(prefItem) - prefAmount);
             }
         }
@@ -338,14 +338,6 @@ public class RecipeChainMath {
         return this;
     }
 
-    private void prepareIngredients(RecipeId recipeId, long stepShift, List<RecipeId> visited) {
-        for (BookmarkItem item : this.recipeIngredients) {
-            if (item.factor > 0 && recipeId.equals(item.recipeId)) {
-                calculateSuitableRecipe(item, item.factor * stepShift, visited);
-            }
-        }
-    }
-
     private void calculateSuitableRecipe(BookmarkItem ingrItem, long ingrAmount, List<RecipeId> visited) {
         final BookmarkItem prefItem = this.preferredItems.get(ingrItem);
 
@@ -366,7 +358,7 @@ public class RecipeChainMath {
         if (ingrAmount > 0) {
             for (BookmarkItem item : this.initialItems) {
                 if (item.containsItems(ingrItem)
-                        && (ingrAmount = addRequiredAmount(item, ingrAmount, item.amount)) == 0) {
+                        && (ingrAmount = addRequiredAmount(item, ingrAmount, item.getAmount())) == 0) {
                     break;
                 }
             }
@@ -379,19 +371,27 @@ public class RecipeChainMath {
             addRequiredAmount(prefItem, ingrAmount, Long.MAX_VALUE);
         } else {
             addRequiredAmount(prefItem, ingrAmount, Long.MAX_VALUE);
-            final long shift = (long) Math
-                    .ceil((this.requiredAmount.get(prefItem) - prefItem.amount) / (double) prefItem.factor);
+            final long multiplier = prefItem
+                    .getMultiplierFromAmount(this.requiredAmount.get(prefItem) - prefItem.getAmount());
 
-            if (shift > 0) {
-                addShift(prefItem.recipeId, shift);
+            if (multiplier > 0) {
+                addShift(prefItem.recipeId, multiplier);
                 visited.add(prefItem.recipeId);
-                prepareIngredients(prefItem.recipeId, shift, visited);
+                prepareIngredients(prefItem.recipeId, multiplier, visited);
                 visited.remove(prefItem.recipeId);
             }
         }
 
     }
 
+    private void prepareIngredients(RecipeId recipeId, long multiplier, List<RecipeId> visited) {
+        for (BookmarkItem item : this.recipeIngredients) {
+            if (!item.emptyFactor() && recipeId.equals(item.recipeId)) {
+                calculateSuitableRecipe(item, item.getAmount(multiplier), visited);
+            }
+        }
+    }
+
     private long addRequiredAmount(BookmarkItem prefItem, long ingrAmount, long maxAmount) {
         long shiftAmount = this.requiredAmount.getOrDefault(prefItem, 0L);
 
@@ -489,7 +489,7 @@ public class RecipeChainMath {
                 final NBTTagCompound toolStats = tagCompound.getCompoundTag("GT.ToolStats");
                 final long maxDamage = toolStats.getLong("MaxDamage");
                 final long damage = toolStats.getLong("Damage");
-                final long leftSteps = (long) Math.ceil((maxDamage - damage) / (double) damagePerContainerCraft);
+                final long leftSteps = (maxDamage - damage + damagePerContainerCraft - 1) / damagePerContainerCraft;
                 final long availableSteps = Math.min(steps, Math.max(1, leftSteps));
 
                 steps -= availableSteps;
@@ -552,13 +552,13 @@ public class RecipeChainMath {
     private void addShift(RecipeId recipeId, long shift) {
         for (BookmarkItem item : this.recipeIngredients) {
             if (recipeId.equals(item.recipeId)) {
-                item.amount += item.factor * shift;
+                item.multiplier += shift;
             }
         }
 
         for (BookmarkItem item : this.recipeResults) {
             if (recipeId.equals(item.recipeId)) {
-                item.amount += item.factor * shift;
+                item.multiplier += shift;
             }
         }
     }
diff --git a/src/main/java/codechicken/nei/recipe/chain/RecipeChainTooltipLineHandler.java b/src/main/java/codechicken/nei/recipe/chain/RecipeChainTooltipLineHandler.java
index 1f2f4af3..abcb9df8 100644
--- a/src/main/java/codechicken/nei/recipe/chain/RecipeChainTooltipLineHandler.java
+++ b/src/main/java/codechicken/nei/recipe/chain/RecipeChainTooltipLineHandler.java
@@ -73,7 +73,7 @@ public class RecipeChainTooltipLineHandler implements ITooltipLineHandler {
                 if (!this.lastControlKey) {
                     final List<ItemStack> items = inventory.values();
                     for (BookmarkItem item : math.recipeResults) {
-                        if (item.factor > 0 && this.math.outputRecipes.containsKey(item.recipeId)) {
+                        if (!item.emptyFactor() && this.math.outputRecipes.containsKey(item.recipeId)) {
                             long amount = 0;
 
                             for (ItemStack stack : items) {
@@ -83,15 +83,18 @@ public class RecipeChainTooltipLineHandler implements ITooltipLineHandler {
                                 }
                             }
 
-                            if (amount >= item.amount) {
-                                final long itemAmount = item.factor * this.math.outputRecipes.get(item.recipeId);
+                            if (amount >= item.getAmount()) {
+                                final long itemAmount = item.getAmount(this.math.outputRecipes.get(item.recipeId));
+
                                 if (itemAmount > 0) {
                                     amount += itemAmount - amount % itemAmount;
                                 }
 
                                 this.math.outputRecipes.put(
                                         item.recipeId,
-                                        Math.max(this.math.outputRecipes.get(item.recipeId), amount / item.factor));
+                                        Math.max(
+                                                this.math.outputRecipes.get(item.recipeId),
+                                                item.getMultiplierFromAmount(amount)));
                             }
                         }
                     }
@@ -122,7 +125,7 @@ public class RecipeChainTooltipLineHandler implements ITooltipLineHandler {
 
             for (BookmarkItem item : math.recipeIngredients) {
                 final long amount = math.requiredAmount.containsKey(math.preferredItems.get(item)) ? 0
-                        : math.requiredAmount.getOrDefault(item, item.amount);
+                        : math.requiredAmount.getOrDefault(item, item.getAmount());
 
                 if (amount > 0) {
                     inputs.add(item.getItemStack(amount));
@@ -130,7 +133,7 @@ public class RecipeChainTooltipLineHandler implements ITooltipLineHandler {
             }
 
             for (BookmarkItem item : math.recipeResults) {
-                final long amount = item.amount - math.requiredAmount.getOrDefault(item, 0L);
+                final long amount = item.getAmount() - math.requiredAmount.getOrDefault(item, 0L);
 
                 if (amount > 0) {
                     if (math.outputRecipes.containsKey(item.recipeId)) {
@@ -155,12 +158,12 @@ public class RecipeChainTooltipLineHandler implements ITooltipLineHandler {
                 if (inventory.contains(item.itemStack)) {
                     final long invAmount = inventory.get(item.itemStack) * item.fluidCellAmount;
 
-                    if ((item.amount - invAmount) > 0) {
-                        inputs.add(item.getItemStack(item.amount - invAmount));
+                    if ((item.getAmount() - invAmount) > 0) {
+                        inputs.add(item.getItemStack(item.getAmount() - invAmount));
                     }
 
-                    if (Math.min(item.amount, invAmount) > 0) {
-                        available.add(item.getItemStack(Math.min(item.amount, invAmount)));
+                    if (Math.min(item.getAmount(), invAmount) > 0) {
+                        available.add(item.getItemStack(Math.min(item.getAmount(), invAmount)));
                     }
 
                 } else {
diff --git a/src/main/resources/assets/nei/lang/en_US.lang b/src/main/resources/assets/nei/lang/en_US.lang
index bb3f98b0..1c0df135 100644
--- a/src/main/resources/assets/nei/lang/en_US.lang
+++ b/src/main/resources/assets/nei/lang/en_US.lang
@@ -302,6 +302,9 @@ nei.options.inventory.guirecipe.handlerInfo.tip=Use shift+d while in the Recipes
 nei.options.inventory.guirecipe.handlerInfo.true=Enabled
 nei.options.inventory.guirecipe.handlerInfo.false=Disabled
 nei.options.inventory.guirecipe.maxHeight=Max Height
+nei.options.inventory.guirecipe.chance=Show Change
+nei.options.inventory.guirecipe.chance.true=Yes
+nei.options.inventory.guirecipe.chance.false=No
 nei.options.inventory.showItemQuantityWidget=Show Item Quantity Widget
 nei.options.inventory.showItemQuantityWidget.true=Yes
 nei.options.inventory.showItemQuantityWidget.false=No
@@ -557,6 +560,10 @@ nei.recipe.shapeless=Shapeless Crafting
 nei.recipe.furnace=Smelting
 nei.recipe.fuel=Fuel
 nei.recipe.fuel.smeltCount=Smelts %s items
+nei.recipe.chance=Chance: %s%%
+nei.recipe.chance.nc=NC
+nei.recipe.chance.ncp=NC(P)
+
 # Deprecated
 nei.recipe.fuel.required=%s required
 # Deprecated