Reload client recipe book after loading modded recipes.

src/main/java/net/minecraftforge/common/crafting/CraftingHelper.java

@@ -67,6 +67,7 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.JsonUtils;
 import net.minecraft.util.NonNullList;
 import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.FMLLog;
 import net.minecraftforge.fml.common.Loader;
 import net.minecraftforge.fml.common.ModContainer;
@@ -611,6 +612,7 @@ public class CraftingHelper {
         Loader.instance().getActiveModList().forEach((mod) -> loadRecipes(mod));
         Loader.instance().setActiveModContainer(null);
         //reg.freeze();
+        FMLCommonHandler.instance().resetClientRecipeBook();
     }
 
     private static void loadFactories(ModContainer mod)

src/main/java/net/minecraftforge/fml/client/FMLClientHandler.java

@@ -56,6 +56,7 @@ import net.minecraft.client.resources.LegacyV2Adapter;
 import net.minecraft.client.resources.SimpleReloadableResourceManager;
 import net.minecraft.client.resources.data.MetadataSerializer;
 import net.minecraft.client.resources.data.PackMetadataSection;
+import net.minecraft.client.util.RecipeBookClient;
 import net.minecraft.crash.CrashReport;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.launchwrapper.Launch;
@@ -1096,4 +1097,10 @@ public class FMLClientHandler implements IFMLSidedHandler
     {
         return SplashProgress.isDisplayVSyncForced;
     }
+
+    @Override
+    public void resetClientRecipeBook()
+    {
+        RecipeBookClient.rebuildTable();
+    }
 }

src/main/java/net/minecraftforge/fml/common/FMLCommonHandler.java

@@ -771,4 +771,7 @@ public class FMLCommonHandler
     }
 
     public boolean isDisplayVSyncForced() { return sidedDelegate.isDisplayVSyncForced(); }
+    public void resetClientRecipeBook() {
+        this.sidedDelegate.resetClientRecipeBook();
+    }
 }

src/main/java/net/minecraftforge/fml/common/IFMLSidedHandler.java

@@ -84,4 +84,6 @@ public interface IFMLSidedHandler
     CompoundDataFixer getDataFixer();
 
     boolean isDisplayVSyncForced();
+
+    default void resetClientRecipeBook(){}
 }