Stephenson, Tristan: - Tristan Stephenson is renowned as one of the leading experts in the bar community on cocktail science and molecular mixology. In 2005 he set up the bar at Jamie Oliver's Fifteen Cornwall, before taking on a role as Brand Ambassador for the Reserve Brands Group in 2007, training bartenders at some of the highest regarded bars and restaurants in the UK, including The Ritz. In 2009 he co-founded Fluid Movement, a breakthrough consultancy company for the drinks industry which lead to the opening of his London bars Purl, The Worship Street Whistling Shop and Black Rock. Tristan makes TV appearances, is a contributor to print and online drinks publications and a judge at international spirit competitions. He is the author of the bestselling The Curious Bartender: The Artistry & Alchemy of Creating the Perfect Cocktail; the following books in the Curious Bartender series: An Odyssey of Malt, Bourbon & Rye Whiskies; Gin Palace; and Rum Revolution.