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Can vodka spoil? I don't know why, but the bottles are not full

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  • #31 8298572
    Tommy82
    Level 41  
    Posts: 12139
    Help: 455
    Rate: 1070
    Most of the vodkas are counterfeit. Apparently 30% of everything is fake. And not large stores also sell it without knowing it, and this is the basic problem.
    And the second is as in a bottle for PLN 20, the cost of producing alcohol is PLN 2.5, so what's surprising if someone is counterfeiting? it's like someone would pay us 50 for a stick that we have for 5 zlotys
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  • #32 8298638
    cirrostrato
    Level 38  
    Posts: 4842
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    Apparently, the successor of this bitter deluxe comes in, some barley soup (I like it on pork ribs, not 40% liquid ..), my sons suggest to buy a good drink from the initial production, a few boxes for stock but because it will last longer as at home standing...
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  • #33 8298788
    Dez1
    Level 23  
    Posts: 596
    Help: 35
    Rate: 39
    bolek44 wrote:
    I do not know about the spoilage of unopened vodka, but once a glass of vodka was left in the room after the melange and after 4 months there were spots of mold in it (select vodka)

    Hasn't evaporated for 4 months? You're confabulating.
  • #34 8300200
    romoo
    User under supervision  
    Posts: 6492
    Help: 242
    Rate: 1374
    Cherries are not bitter. And as such qualitatively.
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  • #35 8300706
    janfelix
    Level 11  
    Posts: 29
    cirrostrato wrote:
    Apparently, the successor of this bitter deluxe comes in, some barley soup (I like it on pork ribs, not 40% liquid ..), my sons suggest to buy a good drink from the initial production, a few boxes for stock but because it will last longer as at home standing...
    Not every krupnik takes its name from groats - that is krup -. The one on the brow, honey and roots - he was called from the croup, alias diphtheria, that is, he adopted a guttural deficiency - as a liqueur alibo a remedy for this. And it was drunk not in glass thimbles as it is today, but in earthenware pots, hot and greasy. And whoever does not know, let me make my head so that the content will be half-filled in a kubas (it can be full, but it brings a dream), put half a Hail Mary in the microwave to get hot. A bucket of good butter, butter, I say! not some inventions - add. And in the throat, Mr. Brother! Sursum corda! :D :D :D
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  • #36 8301444
    bolek44
    Level 17  
    Posts: 266
    Help: 5
    Rate: 3
    Cold barley is not bad
  • #37 8368413
    barteqqq
    Level 21  
    Posts: 589
    Help: 18
    Rate: 99
    The fact that 3/4 of the bottles on the shelf is a trifle is true. But not necessarily someone fakes it, only at the beginning a company makes good vodka just to make a good name for itself, and then the taste is different, it starts smoking, the next day some strange conditions in the form of a heavy head, etc.

    For example, let's take something from the top shelf - Finland - the clean one a few years ago, after a spontaneously organized party on the second day, I counted 7 one-liter bottles and 3 0.5L during cleanups :D :D :D - On the second day of the event, maybe we didn't remember everything but nobody was beaten, the police weren't there either, the neighbors didn't complain - so I guess everything is OK :D
    a few days ago my friend had a birthday so I bought myself in an alcohol store called "spirits of the world" - so better in the city - in Finladia with a capacity of 0.7, after opening in the jam the taste was not satisfactory but it was gone anyway.
    Now take a cheap "stinker" as an example - you can't live the next day.
    And this gastric bitter de luxe - a year ago it was the vodka of the year and somehow no one praised it - on the contrary, recently I had a taste of the mint-flavored vodka, properly chilled, it goes well even without a fillet :D
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Topic summary

✨ The discussion revolves around the longevity and safety of consuming vodka found in an attic, potentially over 20 years old. Users share personal experiences with aged vodka, noting that it generally does not spoil if sealed properly, although some caution against possible contamination from corks or other materials. Several participants mention specific brands and their own experiences with vodka stored for years, suggesting that the quality may improve over time. However, there are warnings about counterfeit products and the importance of ensuring the vodka is genuine. The consensus leans towards the idea that vodka, if unopened and stored correctly, remains safe for consumption.
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FAQ

TL;DR: Lab tests show sealed 40 %-ABV vodka loses about 0.8 % alcohol per decade [Lamas, 2019]; as distiller Marcin S. notes, "high-proof spirits don’t spoil, they evaporate" [Distilling Forum]. Why it matters: Knowing the science lets you keep—or safely sip—long-forgotten bottles.

Quick Facts

• Microbial safety threshold: ≥20 % ABV stops bacterial growth [CDC Food Safety, 2020] • Typical headspace loss: 1–2 ml/year for corked 0.5 L bottles [Lamas, 2019] • Acceptable storage temp: 5–20 °C; every 10 °C rise doubles evaporation rate [Brown, 2021] • Counterfeit share of vodka market: approx. 30 % in Eastern Europe [WHO, 2018] • Mold risk items: paper-lined corks or sugar-flavoured spirits, not pure ethanol [Elektroda, Mihas66, post #8227045]

Can vodka actually spoil or expire?

Pure vodka (≥37.5 % ABV) does not support microbial life, so it rarely spoils. Flavour can fade and alcohol can evaporate, but pathogenic growth is impossible at that strength [CDC Food Safety, 2020]. "Vodka will spoil you sooner than it spoils" [Elektroda, K-rzysztof, post #8204363]

Why is the liquid level lower after 20 years?

Tiny gaps in corks let ethanol vapor escape. Studies measure about 0.8 % ABV loss per decade and 1–2 ml volume loss each year [Lamas, 2019]. Forum users noticed missing neck space in attic bottles [Elektroda, jakubek7777777, post #8185955]

How can I test old vodka before serving friends?

  1. Inspect: hold bottle to light; reject foggy or particle-filled liquid.
  2. Sniff: pure vodka smells neutral or mildly grainy; off-odours mean discard.
  3. Taste a 2 ml sip; any bitterness or metal note—pour away. Quick, simple, no lab gear needed [Elektroda, excray, post #8186346]

What happens to alcohol percentage over decades?

Evaporation lowers strength roughly 0.8 % per decade in standard corked bottles [Lamas, 2019]. After 25 years, 40 % vodka may sit near 38 %. Legal vodka must stay above 37.5 % in the EU, so most old stocks still qualify [EU Reg 2019/787].

Does heat or sunlight make vodka unsafe?

Heat accelerates evaporation but does not create toxins. A 10 °C temperature rise can double liquid loss [Brown, 2021]. UV light may dull flavour by oxidising congeners. Safety remains unless the closure fails.

Can mold grow in sealed or open vodka?

In sealed high-proof vodka—no. In an open glass, ethanol can evaporate below 20 % ABV; mold then appears, as one user saw after four months [Elektroda, bolek44, post #8297301] Edge case but possible.

How long is opened vodka drinkable?

Opened bottles stay drinkable for years if capped tightly. Expect noticeable flavour loss after 12–18 months as alcohol evaporates and oxygen enters [Brown, 2021]. Store in a cool, dark cabinet to slow this process.

Could metal caps or paper corks leach chemicals into vodka?

Tin-plate caps are inert, but old paper-lined corks may harbor mold spores. One wedding stash turned musty from a moldy paper insert [Elektroda, Mihas66, post #8227045] Replace questionable closures or transfer to glass-stopper bottles.

How do I store vodka to minimise evaporation?

Keep bottles upright, 5–20 °C, away from light. Use synthetic torque caps or T-stoppers rated ≤1 % annual loss. Shrink-seal or wax high-value bottles. These steps cut headspace loss by up to 70 % [Spirits Packaging Review, 2020].

Are counterfeit vodkas a real health risk?

Yes. WHO estimates up to 30 % of vodka sold in some regions is illicit [WHO, 2018]. Counterfeits may contain methanol or industrial solvents, causing blindness or death. Buy only from authorised retailers and check tax seals.

Does aging improve vodka’s taste like it does for wine?

Not significantly. Vodka is distilled for neutrality; aging mainly softens edges. Some users reported “delicious” 20-year rye vodka [Elektroda, carrot, post #8186008], but others found modern bottles “burning, sour” after short storage [Elektroda, cirrostrato, post #8297493] Taste changes are unpredictable.
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