Challenge: The chefs cooked dishes with cactus as the main ingredient, using only a wok, in 30 minutes. Dakota: Shrimp Tostada with Watermelon & Prickly Pear Shooter Nyesha: Asian-Style Scallops with Prickly Pear Garnish, Cilantro & Thai Basil Whitney: Cactus & Chicken Fried Rice with Sriracha & Soy Sauce