--- a/net/minecraft/server/RecipeBookServer.java
+++ b/net/minecraft/server/RecipeBookServer.java
@@ -8,6 +8,7 @@
 import java.util.List;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.bukkit.craftbukkit.event.CraftEventFactory; // CraftBukkit
 
 public class RecipeBookServer extends RecipeBook {
 
@@ -27,7 +28,7 @@
             IRecipe irecipe = (IRecipe) iterator.next();
             MinecraftKey minecraftkey = irecipe.getKey();
 
-            if (!this.a.contains(minecraftkey) && !irecipe.c()) {
+            if (!this.a.contains(minecraftkey) && !irecipe.c() && CraftEventFactory.handlePlayerRecipeListUpdateEvent(entityplayer, minecraftkey)) { // CraftBukkit
                 this.a(minecraftkey);
                 this.c(minecraftkey);
                 arraylist.add(minecraftkey);