One Egg Cake
1/4 cup butter or butter substitute, cream this with one cup sugar. Add one egg and mix well. Sift together, 1 2/3 cups flour with 11/2 tsp. Royal baking powder. Add this alternately with milk, enough to make cake batter (from 1/2 to 1 cup). If sour milk is used, add 1/2 tsp. soda. This may be used as a foundation cake for a great many kinds.
— Mrs. Roscoe Blunt