Lulu'S Potato Salad Dressing - cooking recipe

Ingredients

4 egg yolks
1 c. sugar
1 Tbsp. dry mustard
1 1/2 c. milk
1/2 tsp. salt
4 Tbsp. flour
1 1/2 c. vinegar

Preparation

Sift dry ingredients.
Add eggs, milk and vinegar slowly.
Stir constantly while cooking until mixture thickens.