title_body: How long will an opened bottle of whisky last while stored under ideal conditions?
upvoted_answer: Whisky will never go bad after it's opened and kept closed and away from sunlight.
  
  
    How should I store my Scotch Whisky? Unlike wine, whisky does not mature in the bottle. So even if you keep a 12 year old
    bottle for 100 years, it will always remain a 12 year old whisky. As
    long as the bottle is kept out of direct sunlight, the Scotch Whisky
    will neither improve nor deteriorate, even if it is opened. Whisky
    that is stored at very low temperatures can become cloudy, but the
    cloudiness should disappear when the whisky is returned to room
    temperature.