1/2 c. sugar
5 tbsp. flour
Dash of salt
2 c. milk
2 egg yolks, slightly beaten
1 tsp. vanilla

Mix sugar, flour and salt together thoroughly. Add milk and mix well. Add egg yolks and blend. Place over hot water and cook until smooth and thick, stirring constantly about 10 minutes. Cool, stirring occasionally to prevent a skim forming on top. Add vanilla. Makes enough filling for 18 puffs.