Solid Chocolate Cake (Mrs. R. Heim.)

Ingredients

• 1 cup butter
• 2 cups sugar
• 6 egg yolks
• 1 cup sour milk
• 1 teaspoon baking soda
• 3 cups flour
• 6 egg whites
• 1/2 cake Baker's chocolate
• 3 teaspoons vanilla

Instructions

1. Cream together one cup butter and two of sugar.
2. Add six egg-yolks beaten light.
3. Then add alternately one cup sour milk with teaspoon soda dissolved in it, and three cups sifted flour.
4. Fold in egg-whites stiffly beaten.
5. Then add half cake Baker's chocolate melted, and three teaspoonfuls vanilla.
6. Stir hard a minute.
7. Pour into a deep, well greased pan and bake in a moderate oven.