It is best to finish the cooked chestnuts on the same day. If you can't finish it, you can spread it out and save it. Don't put it in a closed and unventilated container, because cooked chestnuts generally contain moisture and need heat dissipation. Poor heat dissipation will naturally lead to deterioration and mildew.

Conditional can also be stored in the refrigerator, and then heated when eating next time, but such repeated heating will definitely affect the taste.