Fascinating article by Harold McGee here:
"I consulted the eminent Sacramento grocer Darrell Corti, who very kindly shared a few items from his storeroom. I compared a new can of French sardines in olive oil with 2000 and 1997 millésimes. The brands were different, and so were the size and color of the fish and the quality of the olive oils. That said, the young sardines were firm and dry and mild; the older vintages were fragile to the point of falling apart, soft and rich in the mouth, and fishier in a good way. A 2007 (70th anniversary) can of Spam was also softer than the 2012 (75th), less bouncy and less immediately and stingingly salty, though the aromas were pretty much the same. Some Corti Brothers mincemeat aged for a year under a cap of suet was delicious, its spices and alcohols seamlessly integrated. A five-year-old tin of French goose foie gras: no complaints. Two vintages of Corti Brothers bergamot marmalade: the older noticeably darker in color and surprisingly reminiscent of Moroccan preserved lemons. And 3-year-old Cougar Gold—still moist and not as sharp as open-aged cheddars—was deeper in color and flavor than the yearling version, with a touch of caramel and the crunchy crystals that are the hallmark of hard aged Goudas."
Does anyone do this?