Rick is in London, the city where he started out as a chef, and now home to 120 world cuisines. In Chinatown, he is entranced by the art of making dim sum and in west London he witnesses the magic of mozzarella making. DJ Stuart Maconie, who's written a book on the 'Full English', tells Rick about the hilarious variations he's had of our favourite breakfast. At home, Rick cooks beef chow mein