1 c. milk
4 tbsp. flour
1/2 c. butter
1/2 c. solid vegetable shortening
1 c. sugar
1 tsp. vanilla

Mix flour and milk together in a saucepan and heat slowly until consistency of heavy cream. Do not let it boil. Put immediately in refrigerator.

In small bowl, mix the butter for 4 minutes. Add shortening and mix for 4 minutes, then add the sugar and mix for another 4 minutes. Mixing is done on highest speed. Add cooled milk-flour, the vanilla and continue whipping until consistency of whipped cream.