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Dear Dr. Vinny,
I have a good number of bottles of wine that have been kept in unfavorable conditions and don’t taste at all good. Is there anything I can do to either re-ferment or turn them into Sherry, etc.?
—Derek R., United Kingdom
I don’t have good news for you, but perhaps your story will be a good warning lesson to folks who don’t pay much attention to their wine storage. If you’re going to put down bottles for long-term storage, you really should pay attention to how they’re being kept. Ideally, you should keep them at a consistently low temperature, away from light, heat, vibration and temperature fluctuation.
If you have wine that hasn’t been stored well and tastes tired and oxidized, there’s not much you can do to salvage it. You can’t re-ferment it, because the sugar from the grapes has already converted to alcohol. It's not as simple as waving a magic wand and turning it into Sherry, which is a specific type of wine, made from Palomino grapes from the Jerez region of Spain, that often has distilled spirits added to it. Not the same thing as mixing old wine with vodka.
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