Rub one cup of butter to a cream with two cups of sugar, add the beaten yolks of four eggs, one cup of milk, the whipped whites of the eggs, three cups flour, three teaspoons baking powder, one cup of milk.
Bake in three layers.
For chocolate frosting or filling boil one cup sugar and a third of a cup of water without stirring until it threads, pour on the beaten white of an egg, beat steadily, adding two heaping tablespoons of grated chocolate, two tablespoons cream, a half teaspoon butter, and a teaspoon vanilla. When the mixture is lukewarm use as filling or icing for cake.