Easy Almond Sponge Cake Serves: 14 cup cake flour 1/2 cup sugar substitute, divided 10 egg whites, at room temperature 1 1/4 teaspoons cream of tartar 1 teaspoon vanilla extract 1/4 teaspoon almond extract Ingredients 1 cup cake flour 1/2 cup sugar substitute, divided 10 egg whites, at room temperature 1 1/4 teaspoons cream