Favorite Soft White Frosting

Ingredients
- 5 Tbsp flour
- 1 c milk
- 1 c sugar
- 12 c shortening
- 12 c margarine
- 1 Tbsp vanilla
Directions
- Mix flour and milk heat slowly until it makes a thick paste Cool in refrigerator
- Combine remaining ingredients beat until fluffy
- Add flour paste and beat well