Watch The Next Iron Chef this Sunday at 9p | 8c to see the fifth taste explored on this special episode inspired by Kikkoman and umami. As the four final contestants vie for the supreme culinary title of Iron Chef, the show travels to Japan for two unique umami-themed challenges. With Kikkoman Soy Sauce used to infuse and inspire their creations, the possibilities are endless, the competition is relentless, and the food, as always, is delicious. Watch as these chefs discover their next masterpieces. Watch as these chefs discover umami.