The penultimate heat week begins, as five more amateur cooks battle against each other. First, they must hold their nerve in the infamous Invention Test, where they have just one hour to cook an exceptional dish from scratch. They must then survive the extremely tricky Palate Test, a brand new MasterChef challenge which sees John demonstrate a chicken pot pie with coleslaw. Without seeing the demo, the amateurs are given just a few minutes to taste this dish before being asked to write down exactly what is in it, using their sense of smell and palate.