The contestants go to a local supermarket, where they have 15 minutes and $60 to buy ingredients for four dishes -- one each of beef, pork, lamb and chicken. Upon return, each team has 45 minutes to cook their four dishes. Afterward, four judges will decide how much they would pay for that particular meal, with each judge representing the type of meat served; the team with the highest monetary total wins. In celebration of Hell's Kitchen's 100th service, tonight's service is an invitation-only, black tie affair, whose guests include various dignitaries and celebrities (including several cast members of Glee), as well as four past Hell's Kitchen winners sitting at the chef's table -- Rahman "Rock" Harper (Season 3), Christina Machamer (Season 4), Danny Veltri (Season 5) and Holli Ugalde (Season 7).