Cooked Salad Dressing - cooking recipe

Ingredients

1/2 c. vinegar
1/2 c. sugar
2 Tbsp. cornstarch
1 Tbsp. flour
1 egg
salt and pepper
1/2 c. water
1 tsp. butter or oleo
1 tsp. prepared mustard

Preparation

Blend all ingredients except butter and mustard.
Cook over low heat until smooth and thick.
Remove from heat; add butter and mustard.
Stir until blended.
Use as dressing for potato salad.