Iron Chef veterans and reigning Thanksgiving Battle victors Bobby Flay and Michael Symon are challenged by the new kids in Kitchen Stadium, Iron Chefs Geoffrey Zakarian and Alex Guarnaschelli in this Thanksgiving battle. Judges are Laurence Fishburne, Gina Torres and Donatella Arpaia. -- Theme: Thanksgiving Past and Present (features both ingredients believed to have been in the first Thanksgiving feast and ingredients typical of modern Thanksgiving dinners).