Hot Potato Salad
["1/2 lb. bacon", "1/3 c. vinegar plus water to make 1/2 c.", "1 egg, slightly beaten", "1 tsp. sugar", "1 tsp. salt", "1/4 tsp. pepper", "5 c. diced, cooked potatoes", "1/2 c. chopped onion"]
["Cook bacon crisp; crumble.", "Combine 1/2 cup bacon drippings with next five ingredients.", "Heat and stir until thickened.", "Add potatoes, onion and bacon.", "Toss; heat thoroughly.", "Serves 6."]
["bacon", "vinegar", "egg", "sugar", "salt", "pepper", "potatoes", "onion"]