dregs of a decoction

例句：

1. 1. The old man had to dig out the dregs of his coffee before he could drink it.
   这位老人不得不挖出咖啡的残余才能喝。
2. 2. The restaurant serves a variety of dishes from the dregs of the kitchen.
   这家餐馆提供各种菜肴，都是厨房的残余。
3. 3. The leftovers from the dinner were still good enough for breakfast.
   晚餐剩下的食物仍然足够早餐食用。