PaperMC/paper-server/nms-patches/net/minecraft/world/level/block/BlockCake.patch

--- a/net/minecraft/world/level/block/BlockCake.java
+++ b/net/minecraft/world/level/block/BlockCake.java
@@ -86,7 +86,18 @@
             return EnumInteractionResult.PASS;
         } else {
             entityhuman.a(StatisticList.EAT_CAKE_SLICE);
-            entityhuman.getFoodData().eat(2, 0.1F);
+            // CraftBukkit start
+            // entityhuman.getFoodData().eat(2, 0.1F);
+            int oldFoodLevel = entityhuman.getFoodData().foodLevel;
+
+            org.bukkit.event.entity.FoodLevelChangeEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callFoodLevelChangeEvent(entityhuman, 2 + oldFoodLevel);
+
+            if (!event.isCancelled()) {
+                entityhuman.getFoodData().eat(event.getFoodLevel() - oldFoodLevel, 0.1F);
+            }
+
+            ((net.minecraft.server.level.EntityPlayer) entityhuman).getBukkitEntity().sendHealthUpdate();
+            // CraftBukkit end
             int i = (Integer) iblockdata.get(BlockCake.BITES);
 
             generatoraccess.a((Entity) entityhuman, GameEvent.EAT, blockposition);