A Chicago-style hot dog, or Chicago Dog, is an all-beef frankfurter on a poppy seed bun, originating from the city ofChicago, Illinois. The hot dog is topped with yellow mustard; chopped white onions; bright green sweet pickle relish; a dill picklespear; 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. The method for cooking the hot dog itself varies depending on the respective vendors preference. Most often they are steamed, water-simmered or grilled over charcoal, the latter of which are referred to as “char-dogs.”
The canonical recipe does not include ketchup, and there is a widely-shared, strong opinion among many Chicagoans and aficionados that ketchup is unacceptable. A number of Chicago hot dog vendors do not offer ketchup as a condiment.