S is for sponge cake and special request! Technically this is a chiffon cake, which is more of a hybrid between a sponge cake and an oil/butter cake. They are both "spongy" cakes and make use of whipped egg whites, but a chiffon has more fat in it, and makes use of leavener, which makes for a more moist and rich cake that is still super light. That is what my youngest wanted for her birthday cake, a marionberry/cherry filling and a light or sponge cake-like cake, with minimal frosting....
