Instead of serving the Italian sausage with the typical topping of onions and peppers, owner Doug Sohn of Hot Doug's in Chicago advises a strange mix of caramelized onions, mustard, and giardiniera (the ubiquitous condiment in Chicago, featuring a combination of pickled vegetables, chiles, and oil). I'd never dream of combining those three together in any normal setting, but here they work absolute wonders. More