diff --git a/internal/blockentity/blockentity.go b/internal/blockentity/blockentity.go
index 31024657..e29db7e4 100644
--- a/internal/blockentity/blockentity.go
+++ b/internal/blockentity/blockentity.go
@@ -92,6 +92,11 @@ func (e *Entity) Tick() bool {
 		e.CookTicks++
 		if e.CookTicks >= CookTime {
 			e.CookTicks = 0
+			// 消耗一个输入（产出由调用方放入输出槽，物品与背包.md §6）
+			e.Slots[SlotInput].Count--
+			if e.Slots[SlotInput].Count == 0 {
+				e.Slots[SlotInput] = item.Stack{}
+			}
 			return true
 		}
 	}
diff --git a/tools/zig.zip b/tools/zig.zip
index 288a9f56..e7e1a7df 100644
Binary files a/tools/zig.zip and b/tools/zig.zip differ