Peel and boil potatoes then ... Chop 1 medium onion (or more) and 1/4 cup ... of each of sweet pickle, relish, yellow mustard, 1 teaspoon ... Stir well then chill.
Remember, no ketchup. In Chicago ... yellow mustard, green relish, a couple of halved tomato slices, diced onions, a dill pickle spear ... celery salt and enjoy!