Potato Salad Dressing
["3 eggs, beaten", "1 c. sugar", "1/2 c. vinegar", "1 tsp. mustard (if desired)", "1 tsp. flour", "1/2 c. water", "1 tsp. salt"]
["Mix all together.", "Cook in double boiler (or in saucepan on medium heat) until it comes to a boil and thickens.", "Remove from heat.", "Cool.", "Store in refrigerator."]
["eggs", "sugar", "vinegar", "flour", "water", "salt"]