The Oxford Companinon to Wine, Edited by Jancis Robinson, Oxford University Press
Simply put, The Oxford Companion to Wine is the quintessential wine reference book. It is a commanding presence in an encyclopedia format offering more in-depth wine information than any other publication, period.
All wine professionals worth their weight in riesling own this book. For everyone else, it has more than 3,000 easy-to-navigate, straightforward entries to learn from.
Now on its third edition, The Oxford Companion to Wine is a spectacular publication to be consulted throughout a lifetime and a MUST HAVE for anyone who is more than just a casual wine consumer.