Most spirits like vodka, rum, and whiskey can last indefinitely if they're stored properly. We're talking cool, dark places with tight seals – think a liquor cabinet or a climate-controlled cellar. Just make sure you're not storing them near a radiator or direct sunlight!
Now, you might be wondering what happens if you leave a bottle of liquor unopened for, say, 10 or 20 years. The answer is, surprisingly, not much! The flavors and aromas might mellow out a bit, but the booze will still be perfectly drinkable. Unless, of course, you're talking about fortified wines like port or sherry – those can go bad after a few years.