The custard is often served hot as a compliment to a variety of delicacies such as pies, crumbles, tarts, and pastries. The major component of a trifle is chilled tubby custard, which is spread over a layer of sponge cake and fruit before being covered in whipped cream. Refrigeration is the best method for storing custard. Custard that has just been prepared or baked can be refrigerated, but first, let it cool for 8 to 10 minutes at room temperature. Cover it with plastic wrap once it has cooled.