Four eggs and their weight of butter, sugar, and flour. Cream butter and sugar, then add the beaten yolks and beat for five minutes. Now put in the stiffened whites alternately with the flour, which should have been sifted with one rounded tea-spoonful of Cleveland's Baking Powder. Pour into a greased baking-pan, evenly, less than half an inch deep, spreading with a broad knife. Bake quickly, but steadily, turn out while hot, spread with jelly, and roll. Cover with paper, and tie into shape until cold. You can make this with plain sponge cake also.