How Long Does Alcohol-Free Beer Last Once Opened?
By Days Brewing Co | Proudly 0.0% Alcohol Free Beer | Published: 2026-10-13
Category: Tips & Care
Opened 0.0% beer tastes best within 24 hours and stays drinkable for up to 3 days in the fridge. Here is how to store, seal, and judge every can.
Quick answer
Once opened, alcohol-free beer tastes best within 24 hours and stays pleasant for up to 3 days if you reseal it and keep it in the fridge. Without alcohol to help hold off spoilage organisms, 0.0% beer is more vulnerable than full-strength beer, so treat an opened can like fresh juice rather than a pantry staple. If it has been sitting out warm overnight, pour it away.
Why 0.0% beer behaves differently from regular beer
Alcohol is a preservative. In a 4% or 5% beer it slows the microbes that spoil a drink, which is one reason an opened bottle can survive a day or two without much damage. Strip the alcohol out and you remove that protection, so opened 0.0% beer is more exposed to oxygen and to whatever lands in the glass.
The bigger everyday issue is oxidation, not infection. Oxygen flattens the hop aroma and turns a crisp lager or a juicy peach lager dull and papery long before it would ever make you ill. That is why the honest answer to how long alcohol-free beer lasts after opening is about flavour first, safety second.
Unopened cans: use the date, not guesswork
Sealed cans are a different story. As long as they stay unopened and are stored somewhere cool and dark, they hold their character far longer than an opened one. The exact shelf life varies by beer and packaging, and Days does not publish a single figure across the range, so the best practice is to check the date stamp printed on the base or side of each can and treat that as your guide.
Heat and light are the two things that shorten that window fastest. A case left in a sunny porch or beside a radiator will fade sooner than the same case kept in a cupboard. If you buy a mixed pack, store it upright and away from direct sun, and rotate older cans to the front so you drink them first.
How to store and judge opened 0.0% beer: 5 steps
- 1. Reseal within minutes of pouring: If you open a can and do not finish it, cover it straight away. A can stopper, a small silicone lid, or even a piece of cling film pressed over the opening will slow the oxygen hitting the surface. Do not leave it open on a counter while you decide whether you want more. Checkpoint: if the beer has been open and uncovered for more than an hour at room temperature, treat it as a drink-now or tip-it situation.
- 2. Get it into the fridge fast: Cold slows the staling reactions that flatten flavour. Move any opened can or bottle to the main body of the fridge, not the door, where temperatures swing every time you open it. Aim to chill it within 15 minutes of pouring. Common mistake: leaving opened cans in a warm room overnight and assuming the fridge will rescue them the next morning. It will not.
- 3. Drink within 24 hours for the best taste: For a clean lager or a fruity pour like a peach or passion fruit lager, the first day is the sweet spot. After that the aroma softens and the finish turns a little dull. It is still safe to drink, but it stops tasting like the beer you bought. Checkpoint: if you opened it to taste rather than to finish, plan the rest of that can into the next day rather than the next week.
- 4. Use three days as your outer limit: Beyond roughly 72 hours in the fridge, the quality drops sharply even if nothing looks wrong. This is a guideline, not a hard safety line, because opened 0.0% beer has no alcohol protection and every extra day adds risk of off-flavours and unwanted microbes. Common mistake: keeping a half-can for a week because it still smells vaguely like beer. If in doubt, pour it out.
- 5. Judge with your senses before you sip: Look for a flat, lifeless pour with no head, a dull or cardboard-like smell, or a sharp sour note that was not there on opening. Any of those means the beer has gone past its best. Cloudiness alone is not a reliable sign, since some styles are naturally hazy. Next step: if an opened beer fails the smell test, tip it and open a fresh can rather than drinking something you will not enjoy.
Days beers to keep in mind
- DAYS MIXED LAGER, PALE ALE & PEACH CANS PACK: The Days Mixed Lager, Pale Ale & Peach Cans Pack splits evenly between clean crisp Lager, bold balanced Pale Ale and juicy Peach Lager, all 0.0% ABV. A mixed pack lets you open only the style you plan to finish, so you are less likely to leave a half-drunk can of a beer you were less keen on.
- STARTER PACK: The Starter Pack includes 6 cans of Lager, 6 cans of Pale Ale and a Days branded pint glass. Pouring into a glass rather than sipping from the can makes it easier to smell and taste whether an opened beer is still fresh.
- DAYS PASSION FRUIT LAGER: Days Passion Fruit Lager is the third beer in the limited-edition Sunrise Series, described as fruity, vibrant and seriously drinkable at 0.0% ABV. Fruity styles lean on bright aromatics that fade quickly once opened, so drink this one soonest after pouring.
