Just out of curiosity, looked up what a Chicago hot dog consists of. Yeah, it's pretty complicated
"A Chicago-style hot dog, Chicago Dog, or Chicago Red Hot is an all-beef frankfurter on a poppy seed bun, originating from the city of Chicago, Illinois. The hot dog is topped with yellow mustard, chopped white onions, bright green sweet pickle relish, a dill pickle spear, tomato slices or wedges, pickled sport peppers and a dash of celery salt. The complete assembly of a Chicago hot dog is said to be "dragged through the garden" due to the many toppings." (Wikipedia)