The shortcakes need to be stored separately in an airtight container from the whipped cream and strawberries or they will just get mushy. Also, fresh whipped cream has to be eaten the day it is made. Whipped cream doesn't stay very fluffy after the day it is made. Unlike Cool Whip (whipped topping) which is more stable). Shortcakes will stay fresh in a container for up to 5 days.