This featherlight sponge cake is a classic dessert that is light, airy, and delicious. It has a delicate texture and a subtle vanilla flavor. The cake is made with simple ingredients, including eggs, sugar, flour, and vanilla extract. It is a versatile cake that can be enjoyed on its own or used as a base for other desserts, such as strawberry shortcake or trifle. This recipe will guide you through the steps to create a perfect sponge cake every time.