1/2 c. butter
1 c. sugar
1 egg, well beaten
1 c. sour milk (1 tbsp. vinegar in milk to sour)
1 1/2 c. sifted flour
1/2 tsp. salt
1 tsp. baking soda
4 tbsp. cocoa

Cream butter and sugar. Add egg and sour milk alternately with dry ingredients. Bake in buttered 8 x 8 pan in 350 degree oven for 35 minutes.

This recipe from the late Marge Heriford.