A perfectly poured history of the world's greatest beer. Joseph Conrad was wrong. The real journey into the Heart of Darkness is recounted within the pages of Bill Yenne's fine book. Guinness (the beer) is a touchstone for brewers and beer lovers the world over. Guinness (the book) gives beer enthusiasts all the information and education necessary to take beer culture out of the clutches of light lagers and back into the dark ages. Cheers! Sam Calagione, owner, Dogfish Head Craft Brewery and author of Brewing Up a Business, Extreme Brewing, and…