(d) Beat the whites until stiff and dry, then fold them into the first mixture.
(e) Gradually sift and fold in the flour until well mixed.
(2) Cake with butter—
(a) Cream the butter by working it with a wooden spoon.
(b) Add the sugar gradually by stirring it in.
(c) Beat the eggs until light, and add to the first mixture. (The eggs may be separated and the whites added later.)
(d) Add the liquid and beat until the sugar is thoroughly dissolved.
(e) Mix the flour and baking-powder in a sifter and gradually sift and beat it into the mixture until it is thoroughly blended.
(Liquid and flour may be added alternately.)
(f) Fold in the stiffly beaten whites, if the eggs have been separated.