Apple Snow

The apple purée can be prepared up to 2 days ahead, cooled completely, and refrigerated in an airtight container. Bring to room temperature before whisking with egg whites. The boiled custard sauce can be made up to 3 days ahead and stored refrigerated. The final whipped apple snow must be made within 2-3 hours of serving for optimal texture.

This dessert is best served immediately or within 2-3 hours of preparation. The foam will begin to separate and weep if stored longer. Leftover apple snow can be refrigerated in an airtight container for up to 1 day, but expect significant deflation and liquid separation. Gently fold before serving, though it will not regain its original volume.