1.   A chiffon cake relies on beaten egg whites for leavening.

2.   If you forget the butter, there is always a rich, dark chocolate chiffon cake, made with vegetable oil.

3.   It also creates a lighter poundcake as moist as chiffon cake, which is made with oil.

4.   Similar to angel food and sponge cakes, chiffon cakes rely on eggs for lightness and air.

5.   Could you please let me know the difference between chiffon cake and sponge cake?