Mabel'S Salad Dressing
["4 eggs, beaten", "3 c. sugar", "4 Tbsp. (heaping) flour", "2 tsp. salt", "4 tsp. mustard", "1 c. vinegar", "3 c. hot water or milk", "4 chunks butter or oleo", "1/2 c. salad dressing"]
["Mix all ingredients in saucepan (except salad dressing) and bring to a boil.", "Remove from heat.", "Add salad dressing and mix well.", "Yield: enough for 10 pounds potato salad."]
["eggs", "sugar", "flour", "salt", "mustard", "vinegar", "water", "butter", "salad dressing"]