Potato Salad
["1 qt. cooked potatoes, sliced", "1/2 c. onions, chopped fine", "parsley", "1 tsp. salt", "1/2 tsp. black pepper", "1 tsp. celery seed", "1 c. celery, chopped fine", "1 c. mayonnaise", "3 tsp. mustard", "1 Tbsp. white vinegar"]
["Mix mayonnaise, mustard and vinegar thoroughly and add to first 7 ingredients.", "Chill."]
["potatoes", "onions", "parsley", "salt", "black pepper", "celery", "celery", "mayonnaise", "mustard", "white vinegar"]