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Cold brew has rapidly become a coffee lover’s favorite, and its popularity shows no signs of abating. But can cold brew spoil? It certainly can! There are several variables that influence how soon a cold brew will degrade, but don’t worry, we’ve got the specifics right here. Therefore, if you’re ready, let’s go further to learn more about cold brew deterioration.

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How Long Does Cold Brew Last?

A cold brew may last up to two weeks on average. So don’t expect the taste to remain consistent.

Depending on how it was kept, your cold brew may develop a range of tastes over time, ranging from pleasant to bitter. As a result, appropriate storage is critical while trying to keep your cold brew fresh.

Cold Brew Shelf Life

A cold brew has a shelf life of 7-10 days at highest quality. But, as previously stated, a cold brew may be kept in the fridge for up to two weeks.

In reality, there are several elements that will influence how long your cold brew will last. Here are some examples:

  • The container in which the cold brew is kept
  • Whether or not the cold brew has been diluted or not
  • Whether or whether the cold brew is purchased from a retailer
  • Whether or not the cold brew contains extra components
  • If the cold brew was steeped at room temperature or not

Does Cold Brew Go Bad in the Fridge?

One of the most popular misconceptions is that an undiluted cold brew may be stored in the fridge for weeks or even months.

This is absolutely not the case!

Over time, a refrigerated cold brew might become weak, watery, and even excessively unpleasant. If left alone for too long, it may potentially develop mold.

As a result, before ingesting a cold brew that exhibits indications of spoiling, it is critical that you dump it.

Does Cold Brew Go Bad at Room Temperature?

Indeed, cold brew may spoil when left at room temperature. This is why it is always advisable to put a cold brew that has been steeped unrefrigerated in the fridge as soon as possible after steeping.

Putting a cold brew on the counter for 20 hours or longer invites disaster. Hence, after the steep times are up, always refrigerate your cold brew.

How Long Does Cold Brew Last Unrefrigerated?

If you’re steeping your cold brew at room temperature, don’t go above 18 hours. After 18 hours, immediately store it in the refrigerator.

But, if you steeped a cold brew at home in the fridge and unintentionally left it out, you should be able to eat it within 18 hours. Anything more (such as 20-24 hours) may make the brew unsafe to consume.

If you bought a cold brew that was sold at room temperature, you may keep it that way until the expiration date written on the label.

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Once opened, however, store shop-bought cold brew in the same manner as homemade cold brew. It should be kept in the fridge and eaten within 7-10 days.

Finally, if you bought a cold brew that was marketed cold, keep it that way. Refrigerate it until the date written on the label. Drink it within 7-10 days after opening for the greatest quality.

How Do You Know If Cold Brew Has Gone Bad?

Now that we’ve covered the fundamentals of how long cold brews endure, let’s look at symptoms that cold brew has deteriorated.

Here’s how to determine whether your cold brew is spoiled:

  • Weak and watery flavor
  • There is little to no scent.
  • A very intense and acidic flavor
  • astringent flavor
  • Mold development
  • There is no caffeine increase.
  • stale flavor

Can Cold Brew Coffee Expire?

A batch of cold brew coffee produced from scratch may go bad in as little as 1-2 days.

Shocked? Don’t be that way.

Although we initially said that your cold brew might survive anywhere from 10 days to two weeks, it is important to note that this is for undiluted coffee.

Cold brew with added water, sugar, milk, cream, or other components spoils significantly more quickly. This is why iced lattes and iced coffees with additional milk may only be refrigerated for a maximum of 48 hours!

As a result, it is normally advised to add tasty additives to your cold brew shortly before consuming it.

Note: Are you looking for methods to transform your coffee from drab to fab? Check out these entertaining recipes to spice up your typical coffee break!

What Happens If You Drink Expired Cold Brew?

Drinking expired cold brew has dangers, just like eating or drinking anything else. Consuming expired foods and beverages, including cold brew, is a major source of foodborne disease.

Can Old Cold Brew Make You Sick?

Sure, drinking an old cold brew may make you ill.

To be safe, we never advocate drinking cold brew that is more than two weeks old. Also, if you observe substantial changes in flavor, texture, or consistency, discard it.

Always avoid consuming anything with evident mold development.

Can Bacteria Grow in Cold Brew?

Since undiluted cold brews often include simply water and coffee grounds, you may believe that germs will not develop in your drink. This, however, is not correct.

It is critical to preserve, refrigerate, and eat your cold brew within 14 days. Following then, we recommend that you discard the cold brew.

It’s simple to make a batch, so don’t take the chance!

Proper Storage of Cold Brew

So, how should you preserve a cold brew?

Easy! Follow these easy instructions to keep your cold brew cold for up to two weeks:

  • Keep your iced coffee in an airtight container (preferably glass).
  • When possible, avoid using plastic containers since they might introduce pollutants and unpleasant tastes into the coffee.
  • If you buy cold brew, keep it in the fridge and don’t open it until you’re ready to drink it.
  • Use a mason jar with a screw-top lid that fits snugly.
  • Never, ever let a cold brew out overnight.
  • Always store your cold brew in the refrigerator after steeping.
  • Throw away any cold brew that exhibits indications of spoiling.
  • Do not store cold brew for more than two weeks.
  • To keep your cold brew fresher for longer, keep it undiluted.
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Does Cold Brew Coffee Go Bad? The Answer Is a Definite Yes!

Cold brew, like any other coffee, may spoil. Indeed, it may make you ill!

A harsh flavor, a faint scent, little caffeine rush, and even mold development are all indicators of a bad cold brew. Throw away any coffee that has been sitting in your refrigerator for more than 14 days, unless it is in an unopened store-bought container.

I hope this helps!


Why is my cold brew cloudy?

A hazy cold brew may occur if the grounds used to create it were too fine. Cold brew is excellent with coarser grounds.

What is floating in my cold brew coffee?

This might mean a number of things. It might be coarse coffee grounds that were not removed, coagulating coffee oils, or even separation of your milk or cream. It’s also possible that your cup was unclean before you used it. If you’re really worried, throw it away and try something fresh.

Can cold brew coffee mold?

Absolutely, it is possible. Coffee contaminated with mold should not be drank.

How do you make cold brew shelf stable?

To keep cold brew shelf stable, utilize scouring bottles, high-pressure pasteurization, or heat pasteurization, and make sure the cold brew has little contact with air.


Does cold brew coffee go bad if left out?

It will not harm you, but it will taste different.

Nevertheless, Drip Beans notes that once steeped, cold brew may be kept in the fridge for nearly 2 weeks — but only 2 days if left at ambient temperature.

Is cold brew bad if it sits out overnight?

Although any new pot of coffee will begin to taste stale after thirty minutes, black coffee should not go bad unless left out overnight. Cold coffee and cold brew concentrate are more volatile, so eat them within twelve hours (assuming no milk is added).

How can you tell if cold brew coffee is bad?

Some indications that your cold brew has gone bad
The odor is rancid or moldy.
Very acidic flavor.
There is noticeably less taste.
The caffeine high has worn off.
A faint odour.
Dec 2, 2022

Can cold brew coffee get moldy?

Cold brew, like iced tea, does not have a very lengthy shelf life. It may not be as excellent a mold medium as tea, but cold brew will mold if not refrigerated and consumed within a week or two.

How long can you leave cold brew coffee?

Cold brew coffee, unlike hot coffee, will stay in your fridge for many hours. It will keep for up to two weeks as an undiluted concentration, however the taste quality will decline after the first week. If you dilute the concentrate with water, the shelf life is reduced to 2-3 days.

Is it OK to drink old cold brew?

Manufacturers often mention the brew date and expiry date on the packaging of store-bought cold brew. “As a general rule, any cold brew brewed in a commercial facility may be excellent to drink for up to four to six months from the brew date on the box,” Wong explains.

What does spoiled cold brew taste like?

Cold brew that has been spoiled might taste harsh, stale, or sour. Check for a change in the fragrance and aromas before you taste it. Look for mold as well.

What does bad cold brew taste like?

These coffees are often acidic, dry, and thin in flavor. Over Extracted – On the other end of the spectrum, if you remove too many solubles from your coffee, it is deemed over extracted. Brews that have been too extracted taste harsh or boring.

Does bacteria grow in cold brew?

The “danger zone” for cold brew, where germs might develop, is 41-140 degrees Fahrenheit. Brew, store, and serve your cold brew at 40 F or below to reduce the danger of bacteria like botulism that may cause foodborne disease. Most toxin-producing bacteria are destroyed when temperatures rise beyond 140 degrees Fahrenheit.

Does cold brew have bacteria?

The bacterium Clostridium botulinum (C. bot.) that causes botulism to proliferate and generate toxin is the principal source of hazard in mismanaged cold brew. Botulism is a potentially fatal illness caused by the microorganisms Clostridium botulinum (C.

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