Overview: The cookery competition continues its tenth series with the fourth quarter-final, and the four talented heat winners have no time to rest on their laurels as they continue to fight for their place in the competition. First, they must prove their mettle in the fiendishly difficult palate and skills test. Chef John Torode cooks poached and fried pepper chicken, herbed gnocchi, mushroom and tarragon sauce, a dish with three different types of mushrooms to identify and which requires a high level of technical skill.