Amazon.com (ISBN 0198609906, Hardcover)

With more than 3,000 entries on every aspect of wine from vine pests to specific grapes, this hefty tome has something for both the seasoned connoisseur and novice alike. Edited by one of today's premier wine columnists, the work covers all aspects of wine, travelling back in time to early Greece to examine wine's role in Dionysian revels, then returning to today's wine centers to explore all aspects of wine appreciation. A full third of the book is dedicated to specific wines and wine-producing regions. All those technical terms you've heard and puzzled over at tastings are clearly explained, making this the perfect reference for newcomers to the world of oenology.

For the true connoisseur, The Oxford Companion offers detailed information on the history of the vintner's art, as well as a plethora of details on everything from climate effects on vine disease to the function of the second malolactic fermentation. If you buy only one wine book, this should be it.