Devil's Food Cake

2 cups sifted Swans Down Cake Flour
1 teaspoon soda
1/2 cup butter or other shortening
1 1/4 cups brown sugar firmly packed
2 eggs or 3 egg yolks, unbeaten
3 squares Baker's Unsweetened Chocolate, melted
1 cup milk
1 teaspoon vanilla

Soft flour, measure, add soda, and sift together three times. Cream butter thoroughly, add sugar gradually, and cream together until light and fluffy. Add eggs, one at a time, beating well after each; then add chocolate and blend. Add flour, alternating with milk, a small amount at a time, beating after each addition until smooth. Add vanilla. Bake in two greased deep 9-inch layer pans or three greased 8-inch layer pans in moderate oven (350° F.) 25 to 30 minutes. Spread Seven Minute Frosting (see recipe book) between layers and on top and sides of cake. Double recipe for three 10-inch layers. (All measures are level)