1 c. milk
5 tbsp. flour
1/2 tsp. salt
1 c. butter
1 c. granulated sugar
1 tsp. vanilla

Pour milk in jar and add flour and salt. Shake until smooth. Cook mixture until thick and pasty. Chill. Cream butter, sugar, and vanilla. Add chilled mixture a tablespoon at a time and beat well after each addition. Whip at high speed for 1 minute. Great on chocolate cake.