Overview: It's the semi-finals. First up, Marcus and Monica send the semi-finalists to Hibiscus in London's Mayfair, the two Michelin-starred restaurant of the formidable chef Claude Bosi. Opened in 2007, Claude has earned his reputation with a food style that experiments with the classics and the chefs don't have long to master his dishes before they are thrown into a relentless three-hour lunch service. With the restaurant full, they must work fast while Claude watches their every move.