On this edition of Biting Talk with Two Chicks, William Sitwell investigates the future of food delivery by drone with Irish businessman Brody Sweeney, talks chilli bombs - the Cincinnati kind - with restaurateur Tim Brice, get all joyful as he ponders a glass of rosé with Mirabeau founder Stephen Cronk, and ducks a crazy glass of something from the House of Heydari with mixologist Farhad Heydari.