Chef Michel Roux Jnr and vegetable expert Gregg Wallace are on the hunt for a young chef who wants to make it to the top of the culinary world. The chefs must make two dishes in 50 minutes from the central ingredient of prawns, then they must recreate two classic dishes - spinach and ricotta ravioli with pesto and zabaglione. Only one will make it through to the quarter final, moving a step closer to winning the title of Professional Masterchef.