Nothing more delicious in the way of cake can be made than sunshine cake. It is especially nice to serve with a frozen dessert of some kind, for it is not too rich and it is attractive in color.
Separate the eggs. Beat the yolks with a rotary beater until they are thick and lemon-colored. Beat the egg whites until they are foamy, add the cream of tartar, and continue beating until they are dry. Fold the sugar into the egg whites and then fold the yolks into this mixture. Sift the flour several times and add it. Add the lemon juice and vanilla, pour into a sponge-cake pan, and bake.