It's waste week, and things are heating up in the hub, where the cooks are set their toughest Level Up yet. They have to level up the basic meal deal and create not one, but three epic elements to wow the judges.For the service challenge, the cooks are tasked with creating a menu based entirely on leftovers from the hub, and the theme of the menu is bowl food. They are introduced to guest judge award-winning chef Ramael Scully, who specialises in the creative use of food waste. This week's prize is to spend a week working with Scully in his restaurant.The week ends in another nail-biting Knives Out challenge, after which one more cook exits the contest, leaving just seven to battle it out next time.