--- a/net/minecraft/world/item/consume_effects/ConsumeEffect.java
+++ b/net/minecraft/world/item/consume_effects/ConsumeEffect.java
@@ -12,6 +12,10 @@
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.level.World;
 
+// CraftBukkit start
+import org.bukkit.event.entity.EntityPotionEffectEvent;
+// CraftBukkit end
+
 public interface ConsumeEffect {
 
     Codec<ConsumeEffect> CODEC = BuiltInRegistries.CONSUME_EFFECT_TYPE.byNameCodec().dispatch(ConsumeEffect::getType, ConsumeEffect.a::codec);
@@ -19,7 +23,15 @@
 
     ConsumeEffect.a<? extends ConsumeEffect> getType();
 
-    boolean apply(World world, ItemStack itemstack, EntityLiving entityliving);
+    // CraftBukkit start
+    default boolean apply(World world, ItemStack itemstack, EntityLiving entityliving) {
+        return this.apply(world, itemstack, entityliving, EntityPotionEffectEvent.Cause.UNKNOWN);
+    }
+
+    default boolean apply(World world, ItemStack itemstack, EntityLiving entityliving, EntityPotionEffectEvent.Cause cause) {
+        return this.apply(world, itemstack, entityliving);
+    }
+    // CraftBukkit end
 
     public static record a<T extends ConsumeEffect>(MapCodec<T> codec, StreamCodec<RegistryFriendlyByteBuf, T> streamCodec) {
 
@@ -30,7 +42,7 @@
         public static final ConsumeEffect.a<PlaySoundConsumeEffect> PLAY_SOUND = register("play_sound", PlaySoundConsumeEffect.CODEC, PlaySoundConsumeEffect.STREAM_CODEC);
 
         private static <T extends ConsumeEffect> ConsumeEffect.a<T> register(String s, MapCodec<T> mapcodec, StreamCodec<RegistryFriendlyByteBuf, T> streamcodec) {
-            return (ConsumeEffect.a) IRegistry.register(BuiltInRegistries.CONSUME_EFFECT_TYPE, s, new ConsumeEffect.a(mapcodec, streamcodec));
+            return (ConsumeEffect.a) IRegistry.register(BuiltInRegistries.CONSUME_EFFECT_TYPE, s, new ConsumeEffect.a<>(mapcodec, streamcodec)); // CraftBukkit - decompile error
         }
     }
 }