Beer
Unopened, beer is often drinkable months past its date but loses aroma. Once poured, it goes flat within hours.
Why beer carries a date and wine does not
Beer is a special case among alcoholic drinks. Because it is usually under 10 percent alcohol, it carries a printed best-by date, unlike most spirits. Under EU law, drinks at or above 10 percent alcohol by volume are exempt from a best-before date, and beer sits just below. But that date is about quality, not safety.
Unopened and kept cool, beer is usually fine for many months past the printed date. What fades is the aroma: hop bitterness and freshness dull, and the beer tastes flatter and slightly stale over time. Pasteurised mass-market beers hold their flavour longer than unfiltered or hop-forward craft beers, which are best drunk fresh.
Once a beer is opened or poured, a different clock starts: the carbonation escapes and it goes flat within hours. An opened, resealed beer keeps a day or two in the fridge but quickly loses its fizz. Beer tastes best freshly opened and well chilled.
The type of beer helps: bottom-fermented beers like pils and lager usually stay stable a little longer than top-fermented wheat or hop-heavy craft beers. And beer in cans or brown bottles is better shielded from light than green or clear glass. If you stock up, choose dark bottles or cans and keep them cool and upright.
How do I spot bad beer?
Old beer gives itself away mostly by taste and smell:
Missing carbonation and a stale, cardboard-like taste show the beer is past its point.
A musty, skunked smell forms when beer (especially in green or clear bottles) is exposed to light. Not a safety issue, but unpleasant.
In filtered beers, haze or flakes is a sign of age. In unfiltered beers, some sediment is normal.
When you open it, fresh beer hisses audibly and forms a head. If the bottle stays silent on opening and the beer barely foams, it has lost much of its carbonation and will taste flat — though it is usually still drinkable.
Shelf life at a glance
Opened versus unopened makes all the difference:
| State | Shelf life |
|---|---|
| Unopened, cool | months past date |
| Craft/unfiltered, unopened | drink fresh |
| Opened/poured | hours (goes flat) |
| Opened, refrigerated | 1–2 days |
Store it right
The right storage keeps beer fresh longest:
Cool and dark — heat and light age beer fast; a cool, dark spot is ideal.
Store upright — unlike wine, beer belongs upright so yeast and sediment stay at the bottom.
Protect from light — green and clear bottles skunk easily; keep them dark.
Drink it fresh — craft and hoppy beers especially, close to their brew date.
Common myths
A few myths surround beer:
No — unopened it is usually safe for months past the date, only the aroma fades.
Only a few strong styles (bock, barley wine) age; regular beer is best young.
No — upright is right, so yeast and sediment do not drift into the beer.
Flat beer need not go to waste: it works for cooking, beer batter or a marinade, and even does the rounds as a hair rinse or plant feed. So a forgotten beer still finds a use.