How does beer skunk in a can?

Skunking is a reaction caused by light interacting with a chemical compound found in hops and has nothing to do with temperature. The technical off flavor name of skunky beer is “lightstruck” and is most common in beer packaged in clear or green glass.
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What makes canned beer skunky?

When hops are boiled down to make beer, they release chemical compounds called Iso-Alpha Acids. They're bitter on their own, but when exposed to sunlight they break down and interact with other molecules in the beer to produce a molecule that's almost identical to the one in a skunk's smelly spray.
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How long does it take canned beer to skunk?

From the same article, The photochemical reaction that skunks beer occurs very quickly; a well-hopped beer in clear glass can become noticeably offensive with just 30 seconds of exposure to sunshine.
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Is skunky beer safe to drink?

Believe it or not, skunked beer is not unsafe to drink. Although a chemical reaction takes place when beer is exposed to light, the reaction only affects the profile of the beer and not its safety. So, you will not get sick just from drinking skunked beer.
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Can beer in bottles skunk?

The reason only bottled beer can be skunked is because UV rays can only reach the beer through glass bottles. Brown bottles do the best job at protecting the beer (about four times more protected), while green bottles are more susceptible, and clear glass bottles are (clearly) the most susceptible to skunking.
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KyBrewReview's Beer 101: Why Do Beers Skunk?



Does beer skunk if it gets warm?

That being said, it is an old pervasive myth that cold beer, when warmed to room temperature, will go “skunky” or bad. Skunking is a reaction caused by light interacting with a chemical compound found in hops and has nothing to do with temperature.
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Does canned beer go bad?

Short answer, no. Beer isn't like milk. With age, it doesn't actually expire or become unsafe to drink. Old beer's taste, however, will absolutely change.
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Why does my beer smell like skunk?

But when talking skunks, the culprit is the hops. During the brewing process, hops are boiled down and release bitter flavor compounds known as iso-alpha acids. These iso-alpha acids, when hit with sunlight, break down into free radicals that get mixed up with proteins that have sulfur in them.
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How do I know if my beer is skunked?

Typically beer will result in the "skunked beer" flavor when it is light-struck. And the most common types of beers to become light-struck are those in green or clear bottles like Heiniken or Corona.
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Is 2 year old canned beer still good?

The short answer is that yes, beer expires. But saying the beer expires is a bit misleading, it doesn't actually become unsafe to drink, it just starts to taste unappealing or flat.
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Is it OK to Rechill beer?

Although simply storing your beer at room temperature until you need to chill it for drinking is perfectly fine, especially if you are going to go through it within a month or two, storing beer in the refrigerator is generally a good idea. Remember that the fridge is both a cold AND a dark place.
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Can beer skunk in the fridge?

It is a worldwide myth that somehow temperature cycling “skunks” beer. The truth is that temperature cycling has little to no effect on beer freshness. Think of it this way, if cold beer warming and then cooling again a single time ruined it, then all beer imported from Europe would be destroyed before you bought it.
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Why is Heineken so skunky?

More recently, in Ashley Routson's The Beer Wench's Guide to Beer, the author says: "Heineken now purposefully exposes its wort to light during the brewing process, forcing it to become skunked prior to bottling."
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What temp does beer skunk at?

If it is that hot – 80 degrees or more – you can be sure the beer will get ruined.
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Why does Corona taste skunky?

We're exaggerating, but Corona and other beers bottled in clear or green glass have developed a reputation as smelling “skunky” or spoiled. That's because they are. Most beers have hops, which often shape the beer's taste.
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Do LED lights skunk beer?

As it turns out, most LED and all fluorescent lights both have major peaks around 400 nm. What this means to the beer lover is that LED and fluorescent lights are more apt to cause beer to go skunky than incandescent and halogen lights.
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What beers dont skunk?

If you are drinking an american lager, you're most likely not going to get a skunked beer because it has lower hop content. The pale ales and IPAs, on the other hand, are more susceptible to skunking. Every beer brewed in the U.S. has hops, however the more hops the more chance for reaction.
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How can you tell if canned beer is bad?

It has a weird taste (like cabbage or sewage)

Despite the fact that there are tons of weird beer flavors out there, it should be pretty clear if the flavor you're tasting is not intentional. Some common flavors that can indicate a bad beer are cooked cabbage, sewage, sulphur, or just an abnormally sour taste.
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Can beer go flat in a can?

No. The carbonation will not be lost if the beer is stored cold (normal fridge temperature) for a short period of time. You won't be able to get it back once it has been lost.
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Does skunked beer lose alcohol?

In a word, no. The alcohol content of beer (and wine, for that matter) is determined during the fermentation process and will not change over time.
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Is Corona beer skunky?

Myth No.

Lightstruck beer is such a common occurrence that many folks just assume that Corona or Heineken is supposed to taste like that. The truth is that skunky beer is flawed, and no brewer wants their beer to taste like the back-end of a skunk.
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Why does beer smell like pee?

It's the amount and type of hops that causes one to think “this beer smells like cat pee!” Seems like we can all agree the that earlier waves of craft beer brewing were all about hops. I'm so glad that's passed! So there was a time where hops were ubiquitous across the beer spectrum.
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Can beer go bad and make you sick?

Beer is a perishable product that stales when it's exposed to light, oxygen, and heat, which degrade the organic compounds that make beer smell and taste great. But even when its flavor is declining, it can be perfectly safe to drink.
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Is beer better in can or bottle?

So does beer taste better from cans or bottles? The answer is, neither. Beer tastes better when poured into a glass.
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Can bad beer make you sick?

Beer that goes bad — or flat — won't make you sick but may upset your stomach. You should throw out beer if there's no carbonation or white foam (head) after you pour it. You may also notice a change in taste or sediment at the bottom of the bottle.
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