Mrs. Richard'S Chocolate Cake
["2 sq. melted chocolate", "2 Tbsp. butter", "1 c. sugar", "1 beaten egg", "1 c. sour milk", "1 c. flour mixed with 1 level tsp. soda", "1 tsp. vanilla"]
["Cream the butter and sugar.", "Add the egg and melted chocolate and vanilla.", "Add the sour milk and flour alternately, beginning with the milk."]
["chocolate", "butter", "sugar", "egg", "sour milk", "flour", "vanilla"]