Bon Appétit presents Chicago Gourmet is back September 23-25 for its 9th year. This year's theme is ‘Food is Art!' and will be hosted by celebrity chef and restaurateur Rick Bayless. The main event takes place over two days (hurry, Sunday tickets are still available!), but here are six special ticketed events and cook-offs you won't want to miss, including the debut of a new celebrity taco bout.