What is "Chicago-style hot dog"?

A Chicago-style hot dog is a popular type of hot dog that originated in Chicago, Illinois and is characterized by its unique combination of toppings. The hot dog is typically made from an all-beef sausage, and is served on a soft poppy seed bun. The Chicago-style hot dog is topped with a variety of ingredients, including yellow mustard, chopped onions, neon green relish, dill pickle spears, tomato slices, and sport peppers. Some variations may also include celery salt or a sprinkle of paprika. The Chicago-style hot dog is a beloved food item in the city of Chicago and has become popular throughout the United States. It is often served at sporting events, fairs, and other outdoor gatherings, and can also be found in many restaurants and food trucks.