what is sponge cake
sponge cake - a light porous cake made with eggs and flour and sugar without shortening. cake - baked goods made from or based on a mixture of flour, sugar, eggs, and fat. angel cake, angel food cake - a light sponge cake made without egg yolks. jellyroll, Swiss roll - thin sheet of sponge cake spread with jelly and then rolled up to make a cylindrical cake.