5 T sifted cake flour
1 c milk
¼ lb butter (1 stick)
¼ lb margarine (1 stick)
1 c sugar
1 tsp vanilla
Stir cake flour with milk. On low heat cook and stir until smooth and thick – about 5-7 minutes. Cool. Beat butter and margarine; add sugar gradually and beat until smooth. Add flour paste and beat until light and fluffy. Beat in vanilla and frost cake.