Happy National Sponge Cake Day! This airy cake is simple and delicious, made with only a few basic ingredients. Its texture is achieved by beating eggs and sugar together, which incorporates air to make it light and fluffy. You can easily add flavorings like orange and lemon to make your cake bright and citrusy. While it isn’t exactly the healthiest dessert out there (the large amount of eggs can add a lot of fat), there’s nothing wrong with indulging just a little bit! Watch the video below to learn how to make a basic sponge cake. As a fat-free alternative, you could make an angel food cake, which uses the same preparation method with only the egg whites.