A Food Network Star must be able to teach home viewers how to prepare great meals. In the Mentor Challenge, Alton Brown challenges the finalists to teach him a recipe. Then for the Star Challenge, the finalists must create a video demonstrating one o... (more)f their own dishes for the home viewer. What they don't know is that Chef Alex Guarnaschelli will be playing along, trying to make the dish. After Alex is revealed to the finalists, she helps the Selection Committee decide who will be sent home.