Some examples include:
Chicago-style hot dog - soft, poppy-seed bun topped with a frankfurter, layered with yellow mustard, nuclear-green relish, onions, tomato wedges, pickle spear, peppers and celery salt. It's considered more of a snack than a meal to natives and should be consumed sans ketchup.
Cincinnati-style chili - This distinctive breed of chili is so popular in Cincinnati that there are parlors dedicated to it —chili parlors, that is. The Cincinnati version of chili tends to be a sweeter, soupier dish than traditional non- Ohio chilis. It's served with noodles and is distinguished by spices such as cinnamon or chocolate.
Indianapolis Breaded pork tenderloin sandwich - Hoosiers love their pork, and they love it deep-fried.
Omaha Reuben sandwich - Omaha stakes its claim on this pickled delight, which involves corned beef, Swiss cheese, sauerkraut and Russian dressing on rye bread.
Read about other food cities in the Chicago Tribune article below.
Mapping the Midwest by favorite food. Chicago Tribune, 2011.