Hot German Potato Salad
["5 lb. cooked potatoes", "1 1/2 to 2 lb. bacon", "3/4 c. vinegar", "1 1/2 c. sugar", "3 Tbsp. flour", "2 tsp. salt", "1 tsp. dry mustard", "1 tsp. celery seed", "1 1/2 c. cold water", "parsley flakes, onion salt or onions, as desired"]
["Cook and peel potatoes.", "Dice them.", "Fry bacon and onions and remove from pan.", "Crumble bacon over potatoes.", "Drain off all but 1/2 cup of bacon fat.", "To this, add vinegar, sugar, flour, salt, mustard, celery seed and water.", "Cook until thick, then mix with potatoes.", "This can be made a day ahead and reheated in a slow oven (300\u00b0).", "Makes 15 servings."]
["potatoes", "bacon", "vinegar", "sugar", "flour", "salt", "dry mustard", "celery", "cold water", "parsley"]