French Custard

The custard base can be made up to 2 days ahead and stored covered in the refrigerator. However, the steamed egg whites should be prepared just before serving as they will weep and deflate within a few hours. Assemble the layered dessert no more than 1 hour before serving for best texture.

Store the assembled dessert covered in the refrigerator for up to 24 hours, though the egg white layers will lose their airy texture and begin to weep. The custard base alone will keep for up to 3 days in an airtight container in the refrigerator. This dessert is not suitable for freezing due to the delicate nature of both components.