Nigel Slater explores the culinary secrets of impressionist and satirist Rory Bremner. Chris Tarrant challenges Rory to make a fish pie while impersonating him, Rory's co-star and friend John Fortune loses an expensive truffle as he impersonates Nigella Lawson, Pink Floyd drummer Nick Mason rustles up a Middle Eastern delight, and Rory's wife knocks together a tagine of love.