German Potato Salad
["5 to 6 diced slices bacon", "2 Tbsp. flour", "1/3 c. sugar", "2 tsp. salt", "1/2 tsp. pepper", "1 egg", "1/4 c. vinegar", "1 c. water", "1/4 c. lemon juice", "1 qt. sliced cooked potatoes", "1/2 c. sliced onion", "1/4 c. minced parsley", "1 tsp. celery seed"]
["Fry bacon until delicately browned; remove.", "Drain excess fat, reserving 1/4 cup in skillet.", "Add flour, sugar, salt and pepper; blend well.", "Beat egg slightly.", "Add vinegar, water and lemon juice.", "Add gradually to mixture in skillet; cook until thickened, stirring constantly.", "Add bacon and remaining ingredients; toss lightly."]
["bacon", "flour", "sugar", "salt", "pepper", "egg", "vinegar", "water", "lemon juice", "potatoes", "onion", "parsley", "celery"]