Edith's Boiled Icing

Ingredients

• 4 tablespoons flour
• 1 cup milk
• 12 cup margarine or 12 cup butter
• 12 cup shortening
• 1 cup white sugar

Instructions

1. Whisk milk and flour together.
2. Boil and stir until smooth and creamy and thickened.
3. Set aside and cool.
4. Cream together remaining ingredients and beat well.
5. Add cooled mixture and beat until smooth and creamy.
6. Cooking time includes cooling time.