Two squares of Baker's chocolate, grated, 1-2 cup sweet milk and yolk of 1 egg. Boil this together until soft and add, when cool, 1-2 cup of butter, 1-2 cup sour milk, 2 small cupfuls sugar, 2 eggs, or yolks of 6, 2 cups flour, 1 teaspoon of baking soda. Flavor with vanilla.