This recipe shows you how to make the ultimate fluffy sponge cake that's virtually foolproof and doesn't require warming the eggs. First, whip the egg whites until stiff peaks form to make meringue, then gradually mix in the egg yolks, milk, cake flour, vegetable oil, and vanilla. Pour the batter into a mold and bake in the oven for a moist, melt-in-your-mouth sponge cake. It's also perfect as a base for decorations.