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.

Guest chef Gareth Johns from Machynlleth sings the praises of Welsh cuisine with a menu that includes a creamy chowder of local cockles and smoked bacon, roast rump of Radnor lamb and goats' cheese terrine with honey and apples.