Cakes that use the Sponge method are explored in detail. Sponge cakes are leavened with air, and have less fat than other types of cakes. They are made from egg foams or meringues. The two basic categories of sponge cakes are discussed in detail- Whole Egg Foams and Separated Egg Foams. Chef Sokol breaks down the different types of each category of sponge cakes and reviews each type.