"Birthplace of the “Big Baby,” Nicky's is the best place to try a lesser-known Chicago original. The order of the ingredients on this burger is its distinguishing characteristic. Two griddled patties sandwich a slice of American cheese and are placed over, rather than under, pickles, ketchup, and mustard. Grilled onions go on top of the beef and the whole thing is set on a sesame seed bun." - Eater Staff, Ashok Selvam, Naomi Waxman