Paper/nms-patches/IRecipe.patch

--- a/net/minecraft/server/IRecipe.java
+++ b/net/minecraft/server/IRecipe.java
@@ -3,6 +3,7 @@
 public abstract class IRecipe implements Comparable<IRecipe> {
 
     protected String a;
+    public MinecraftKey key; // CraftBukkit
 
     public IRecipe() {
         this("");
@@ -25,10 +26,24 @@
     }
 
     public int a(IRecipe irecipe) {
-        return ((MinecraftKey) CraftingManager.recipes.b(this)).a((MinecraftKey) CraftingManager.recipes.b(irecipe));
+        return this.key.a(irecipe.key); // CraftBukkit
     }
 
-    public int compareTo(Object object) {
+    public int compareTo(IRecipe object) { // CraftBukkit - decompile error
         return this.a((IRecipe) object);
     }
+
+    // CraftBukkit start
+    @Override
+    public boolean equals(Object obj) {
+        return obj instanceof IRecipe && key.equals(((IRecipe) obj).key);
+    }
+
+    @Override
+    public int hashCode() {
+        return key.hashCode();
+    }
+
+    public abstract org.bukkit.inventory.Recipe toBukkitRecipe();
+    // CraftBukkit end
 }