Top Chef is an American reality competition show that airs on the cable television network Bravo, in which chefs compete against each other in weekly challenges. They are juged by a panel of professional chefs and other notables from the food and wine industry with one or more contestants eliminated each week. In July 2007, production began on Season Four to be shot in Chicago.Season Four began airing in March 2008. The show is produced by Magical Elves Productions, the same company that created Project Runway.