I like the occasional Negroni or Manhattan, but I'm not a heavy drinker. As far as I'm concerned liquor is pretty much immortal, but what's the rule on vermouth?
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Might be a better fit on alcohol.stackexchange.com but pretty longer than you will live– paparazzoCommented Jul 13, 2018 at 20:29
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1The oldest wine ever drunk by a human without severe side effects was an archaeologist trying Roman wine that did not turn into vinegar... ¯\_(ツ)_/¯– FabbyCommented Jul 13, 2018 at 20:43
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1 Answer
Opened, at room temp: A week or two without serious flavor changes.
Opened, but kept in the fridge: a month, at least. (I'm still working my way through a bottle of dry vermouth with no noticeable degradation in flavor in ~3 months, ymmv of course).
Unopened: A year+ at room temp.
Source: Serious Eats experiment
