 Iowa is the leading pork producer in the United States.This is reflected in Iowan cuisine, which includes the pork tenderloin sandwich (or simply 'pork tenderloin'), consisting of a lean section of boneless pork loin that is pounded flat, breaded, and deep fried before being served on a seeded hamburger bun with any or all of ketchup, mustard, mayonnaise, and dill pickle slices.It is a popular "fair food" at the Iowa State Fair where the meat where the meat of a pork tenderloin sandwich is often far larger than the area of the bun.