The Sponge Cake is a foam cake. The Pound Cake is a butter cake. Sponge Cakes are made with basically three main ingredients – eggs, sugar and flour. They are light and airy as a result of the air beaten into the separated egg yolks and egg whites.
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Pound cake ingredients
How do pound cakes differ from shortened cake. Pound cakes contain no fat. Which pertain to unshortened cake. Called foam cakes, Contain no fat, Angle food cake is an example of unshortened cake, Chocolate cakes are unshortened, Leavened by steam and air.