Wine. How does it work? What constitutes quality? And aging: can I take the cheap ass grocery store wine, keep it for 50 years and then sell it for millions as vintage?
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Supplementing these very detailed answers to mention that often old wine is valuable not because it is old per-se but because it is from a “good year.”
Various weather patterns can affect how grapes grow, and certain years are known for producing good grapes in particular regions. The thing is, you can’t make any more wine from a year that has already passed, so the supply of wine from these years can never increase, even as the number of people who like to drink wine (and the money they’re willing to spend on it) grows. In the end, bottles of wine from those years can become quite valuable.
This phenomenon doesn’t matter to cheap wine, which is made by blending many varieties of grapes grown in many different places. It could matter to moderately-priced supermarket wine, but you’d need to do a lot of research to take advantage.
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