Sponge cake is a light and airy dessert made primarily from flour, sugar, and eggs. It gets its unique texture from the air incorporated into the batter during mixing, which helps it rise when baked. There are various types of sponge cakes, including Genoise and Chiffon, each with slight differences in ingredients and preparation methods. This cake is often used as a base for layered desserts and can be flavored with vanilla, chocolate, or citrus. It is typically served plain or with toppings like whipped cream, fruit, or frosting, making it a versatile choice for many occasions.