This orange sponge cake is a light and fluffy dessert that is perfect for any occasion. Made with fresh orange juice and zest, this cake is moist and flavorful. The addition of egg whites gives it a fluffy texture and a delicate crumb. This recipe is easy to make and requires only a few ingredients. It is perfect for those who want a simple and elegant dessert. Serve it with a dusting of powdered sugar or a drizzle of orange glaze for a beautiful presentation.