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?

  • Might be a better fit on alcohol.stackexchange.com but pretty longer than you will live
    – paparazzo
    Jul 13, 2018 at 20:29
  • 1
    The oldest wine ever drunk by a human without severe side effects was an archaeologist trying Roman wine that did not turn into vinegar... ¯\_(ツ)_/¯
    – Fabby
    Jul 13, 2018 at 20:43

1 Answer 1


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

  • Vermouth turning to vinegar? 🤣
    – roetnig
    Jul 14, 2018 at 11:13

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