Jerry Lewis' Vinegar Cake

1/2 c Butter

1 1/2 c Sugar

2 Eggs

1 ts Vanilla

2 Squares bitter chocolate;

-melted 2 c Flour; sifted

1/2 c Sour milk

1/2 ts Salt

1 ts Baking soda

1 tb Vinegar

Cream together butter and sugar until light and fluffy. Stir in eggs. Add vanilla and blend well. Add chocolate. Sift flour with salt and add to creamed mixture, alternately, with sour milk. Mix together soda and vinegar and add to mixture. Pour into 2 greased 9-inch layer pans. Bake at 375F degrees for 25 minutes.