PaperMC/paper-server/patches/sources/net/minecraft/world/effect/SaturationMobEffect.java.patch

--- a/net/minecraft/world/effect/SaturationMobEffect.java
+++ b/net/minecraft/world/effect/SaturationMobEffect.java
@@ -3,6 +3,10 @@
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.player.Player;
+// CraftBukkit start
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+// CraftBukkit end
 
 class SaturationMobEffect extends InstantenousMobEffect {
 
@@ -13,7 +17,15 @@
     @Override
     public boolean applyEffectTick(ServerLevel world, LivingEntity entity, int amplifier) {
         if (entity instanceof Player entityhuman) {
-            entityhuman.getFoodData().eat(amplifier + 1, 1.0F);
+            // CraftBukkit start
+            int oldFoodLevel = entityhuman.getFoodData().foodLevel;
+            org.bukkit.event.entity.FoodLevelChangeEvent event = CraftEventFactory.callFoodLevelChangeEvent(entityhuman, amplifier + 1 + oldFoodLevel);
+            if (!event.isCancelled()) {
+                entityhuman.getFoodData().eat(event.getFoodLevel() - oldFoodLevel, 1.0F);
+            }
+
+            ((CraftPlayer) entityhuman.getBukkitEntity()).sendHealthUpdate();
+            // CraftBukkit end
         }
 
         return true;