Note from Ricardo Once the fritters have been fried, you can refrigerate or freeze them on a baking sheet. Once frozen, transfer them to an airtight container. They will keep for 3 days in the refrigerator or 3 months in the freezer. You can reheat them on a baking sheet in an oven preheated to 400°F (220°C) for about 10 minutes (if refrigerated) or 15 minutes (if frozen), or in an air fryer at 350°F (180°C) for 5 minutes (if refrigerated) or 10 minutes (if frozen), or just until heated through and crispy.