Store the cake in an airtight container at room temperature for up to 3 days. If you’ve added whipped cream and orange curd, store the cake in the refrigerator, where it will keep for up to 5 days. The cake can also be frozen (without the whipped cream and curd) for up to 3 months. Wrap it tightly in plastic wrap and then in aluminum foil before freezing. Thaw at room temperature before serving.