Chocolate Mocha Cake - cooking recipe

Ingredients

1 egg, beaten
1 c. sugar
1 c. sour milk
1/2 c. butter
1 tsp. soda
1 1/2 c. flour
2 Tbsp. cocoa
1 tsp. vanilla

Preparation

Cream butter.
Add sugar and beaten egg.
Dissolve soda and cocoa in sour milk and add to mixture.
Work in the flour slowly. Beat 100 times.
Place the mixture in a well-greased, 9 x 13-inch pan and bake at 350\u00b0 for 35 to 40 minutes.