The guest chef on this week's culinary showcase is Stephen Terry , whose three-course meal includes crab salad with deep-fried avocado, shoulder of lamb and potato torte, and blackberry and ricotta cheesecake.

The guest chef this week is the exuberant Gennaro Contaldo , Jamie Oliver 's friend and mentor, whose three-course menu includes gnocchi filled with wild mushrooms, guinea fowl cooked with rosemary and garlic, and a hazelnut cake served with marscapone.