請問壞掉的蛋要如何處理才不會浪費??

If it turns black or produces bad smell, throw it away, don't eat anymore. You can use expired eggs as hair conditioner, it will give shine and moisture to the hair, but don't use very hot water to rinse, otherwise the egg will be boiled. You can also use them as facial mask!

可以把蛋沖開水加糖飲~十分美味