Chocolate Layer Cake.

Whites of 3 eggs, 1 yolk, 1 cup of sugar, ¹⁄₂ cup of butter, ¹⁄₂ cup sweet milk, 2 teaspoons of baking powder, 2 cups of flour, bake in layers. Filling 2 squares of chocolate melted, ¹⁄₂ cup of sugar, 1 egg, 1 teaspoon of butter, 2 tablespoons of sweet milk, cook until thick and spread between the layers, 1 teaspoon vanilla flavoring.