Fried bánh cam can be kept at room temperature for up to 1 day. If you want to keep them longer you can refrigerate them for up to 5 days. The chilled bánh cam can be re-heated in the oven or in a toaster oven or air fryer until they are warmed through and crispy. Alternatively, you can freeze them on a baking sheet until they are solid, then transfer them to a resealable plastic storage bag and freeze for up to 3 months. Frozen bánh cam should be thawed before being re-heated.