An Asian culinary theme runs through this episode’s challenges. First the contestants put their own twists on sushi, then they work as teams to participate in a charity event. Guest Judge: Hiroshi Shima – QuickFire Challenge. Guest Judge: Ming Tsai – Elimination Challenge QuickFire Challenge: Create a Sushi Dish in 30 Minutes. Elimination Challenge: Work as Two Teams to Create One Hot and One Cold Dish Using Flavors from Korea and Vietnam.