Light Sponge Cake

This versatile cake, which is used in varying ways for several recipes throughout the book, takes about 10 minutes to mix and 10 minutes or less to bake. It is a slender, airy, yet velvety cake layer containing no fat other than that from the egg yolks, making it sturdy enough to absorb moisture from other components without falling apart. The following recipe gives instructions for baking the cake in a half sheet pan. The cake can also be made in two 10