Mark and Francis discuss tipping. Their guest is Colman Andrews. He was the cofounder and a former editor in chief of Saveur, and is the author of four acclaimed cookbooks, including Catalan Cuisine, which introduced the now-trendy cooking of Catalonia, Ferran Adria's home region, to American food-lovers. He joins to guys to discuss his book, Ferran: The Inside Story of El Bulli and the Man Who Reinvented Food....