Here’s a wine whose aging potential is entirely unknown to most wine drinkers. Good wine from Vouvray – a tiny region in France’s Loire Valley that grows almost exclusively chenin blanc – can be enjoyed young but takes on fascinating secondary and tertiary flavors with aging. Some of the best examples, particularly those made in the demi-sec (semi-sweet) and moelleux (sweet) styles, can improve for half a century or more. It’s worth emphasizing that Vouvray’s lack of notoriety makes it one of the very best bargains among age-worthy wine. To illustrate the point, the bottle we are laying down for 25 years (2005 François Pinon “Cuvée Tradition”) cost less than $20.