It's the semi-finals. First up, the chefs head to London's Knightsbridge to cook for formidable French chef Pierre Koffmann. With a fearsome reputation and over 50 years of experience, he has trained a generation of great chefs, including Gordon Ramsay, Michel Roux Jr and Tom Kitchen. The semi-finalists face the daunting task of a lunchtime service under this culinary superstar. Each is responsible for a Koffmann classic from the lunch menu, and they must immediately get to grips with his back-to-basics, instinctive approach to cooking. And if that wasn't intimidating enough, after service they must each cook Pierre one of his own famous signature dishes. Created in the 1970s and still a restaurant favourite, they will need a steady hand and a cool head to deliver a perfect version of confit of salmon with sauteed bayonne ham and a piperade of tomatoes and green pepper for the chef himself to taste.
MasterChef: The Professionals was broadcast on BBC2 at Thursday 4 December 2014, 20:00.