(WSJ) - Oenophiles love a good debate, and a popular subject these days pits single-vineyard wines against blends. Is one better than the other? Lettie Teague weighs in

WINE LOVERS ARE rarely without topics to debate. Two particular favorites are the superiority of red wine over white (red always triumphs) and whether a wine with some age is better than one that is young (this invariably ends in a draw). Lately, a third subject has been cropping up in my conversations with friends: Single-vineyard wines vs. blends.

Is it true that a wine from a specific place is inherently superior to a wine made...