Potato Salad Dressing - cooking recipe

Ingredients

1 Tbsp. flour
1/2 c. sugar
1 tsp. salt
1 tsp. dry mustard
2 eggs
1/2 c. vinegar
1 c. boiling water
butter (size of a walnut)

Preparation

Mix flour, sugar, salt and mustard.
Add eggs, vinegar, then boiling water.
Add butter after mixture boils.
Stir constantly over high heat until the mixture boils several minutes.