Salad Dressing(Dressing For Potato Salad) - cooking recipe

Ingredients

3 tbsp. sugar
4 tbsp. white vinegar
1 tsp salt
1 or 2 tbsp mustard
1 1/2 tbsp. flour
1 egg
3/4 c. milk
1 tbsp butter (optional) Add at the end.

Preparation

In a sauce pan whip together all ingredients. Milk is add gradually. Turn on heat. Stir constantly with wooden spoon about 5 minutes. or until thick.