1. Mix sugar, flour and salt.
2. Warm milk slightly in microwave and slowly add to dry ingredients.
3. Mix well. Stir constantly on medium heat until thickened.
4. Cover and cook slowly for 20 minutes, stirring occasionally.
5. Beat egg yolks slightly. Add to hot mixture on stove and cook three
minutes longer.
6. Remove from heat, stir in butter or margarine, and pour into a baked
pie shell.
7. Add whipped cream for a delightful addition.