The country's top chefs compete to cook a banquet at London's Gherkin building. Every week, two chefs representing one of seven British regions will compete to make a starter, a fish course, a main course and a dessert for the judges. The chefs from London and the South East prepare their fish courses. Jason Atherton prepares london cure salmon, horseradish snow, rye bread and young watercress, whilst Atul Kochhar serves spicy confit salmon with semolina savoury pudding.