Cooked Potato Salad Dressing
["1 c. sugar", "3/4 c. milk", "1/4 c. vinegar", "1 egg, beaten", "1 tsp. dried mustard", "1 Tbsp. flour (heaping)"]
["Mix flour and sugar well.", "Add eggs.", "Add milk and vinegar. Cook until thick."]
["sugar", "milk", "vinegar", "egg", "dried mustard", "flour"]