Journalist Michaele Weissman has written extensively about coffee for the New York Times and the Washington Post, but her new book, God in a Cup (Wiley, 2008), approaches the subject in a far more personal way. Focusing on the rapidly growing specialty coffee sector and three young roasters in particular, Weissman recently trekked around the world, exploring everything from the challenges faced by coffee farmers in Burundi and Rwanda to the unlikely winner at last year's barista championship in Los Angeles. Along the way, Weissman decodes the intricate coffee chain, befriends notorious coffee personalities, and reveals the most lusted-after varietals. (The book's title comes from one lovestruck man's description of the Panamanian coffee Esmeralda Special.) Recently, SAVEUR caught up with Weissman by phone to learn a bit more about the mysterious brew many of us take for granted.