Does oat milk go bad if left out

Here are the hottest does oat milk go bad if left out articles edited and compiled by Takeout Food

Between cow’s milk, almond milk, oat milk, and a dozen other milk varieties, it’s not always easy to remember how to best enjoy them. Especially since some varieties spoil so easily, it’s always important to remember how to store your milk. Does oat milk need to be refrigerated, or is it okay to store it at room temperature?

The truth is, it depends. Whether or not your oat milk needs to be refrigerated ultimately comes down to where you got it and how it’s made. If you want to know whether or not yours needs to be kept in the fridge, take a quick look at our guide below.

Table of Contents

  • When To Refrigerate Oat Milk
  • How Long Does Oat Milk Last?
  • Has Your Oat Milk Gone Bad?
  • Frequently Asked Questions

When To Refrigerate Oat Milk

Whether your oat milk requires refrigeration depends entirely on what type you have. Find out how to store each type of oat milk below.

Shelf-Stable Oat Milk

Shelf-stable oat milk is the easiest to store, as it contains preservatives and has gone through an extensive pasteurization process. This, combined with its sterile packaging, allows it to stay fresh at room temperature as long as it is kept in an airtight container. It doesn’t matter if it has been opened or not; as long as it’s within its best-by date, you don’t have to refrigerate it.

If you’re not sure whether the oat milk at your grocery store is shelf-stable or not, pay attention to how it’s stored before you buy it. If it’s not refrigerated, you can probably store it at room temperature after you take it home.

Refrigerated Oat Milk

As mentioned above, it’s best to pay attention to how your oat milk is stored at the supermarket. If you found it in the fridge, chances are it needs to be stored there too. You can also tell refrigerated oat milk by its packaging, which is thinner and less resistant to spoilage.

Finally, just read the container itself. If your oat milk needs to be refrigerated, it will say so right on the bottle.

Homemade Oat Milk

making oat milk by straining steel cut oats

Homemade oat milk doesn’t contain any of the preservatives in shelf-stable oat milk and hasn’t gone through the same pasteurization process. This means it has a much shorter shelf life and needs to be kept in the refrigerator. In fact, even in the refrigerator, you shouldn’t try to keep it for longer than five days.

How Long Does Oat Milk Last?

Just like when considering storage, oat milk’s shelf life depends on the type you have on hand. It’s always a good idea to check the “best by” date on the packaging to get an idea of how long it will last. If you’re looking for an estimate, take a look here:

  • Homemade oat milk has the shortest shelf life of just 5 days, even when refrigerated in a sealed container.
  • Refrigerated or shelf-stable oat milk lasts up to 10 days when stored in an air-tight container.
  • Shelf-stable oat milk can last for up to 9 months, even out of the fridge, if its original packaging has not been opened.

Has Your Oat Milk Gone Bad?

If your oat milk has been in storage for more than a few days, it’s always a good idea to be on the lookout for signs of spoilage. Some are more obvious than others, do try to keep in mind all of them before taking your first drink.

Off Color

Normally, oat milk should have a very pale white color, leaning slightly tan or beige. It’s not as white as cow’s milk, but it’s close. If you notice it starts to turn yellow or a darker brown, that means it has started to spoil and needs to be replaced.

Sour Smell and Taste

Fresh oat milk doesn’t have much of a smell, with just a slightly sweet aroma. This makes it easy to smell spoilage, with any sour odors being a dead giveaway.

Of course, we don’t recommend you give spoiled oat milk a taste. Though if you drink anything that has a sour flavor, you should probably stop drinking it to avoid food poisoning.

Thick or Clumpy Texture

Just like cow’s milk, oat milk will start to curdle when spoiled. However, this only happens after bacteria have been growing for some time, so the absence of clumps doesn’t necessarily mean your milk is safe to drink.

organic oat milk

Frequently Asked Questions

Top 7 does oat milk go bad if left out edited by Takeout Food

Does Oat Milk Need to Be Refrigerated Before Opening [Fact-Checked!]

  • Author: upthirst.com
  • Published: 11/25/2021
  • Review: 4.77 (393 vote)
  • Summary: · If your oat milk has been left out at room temperature for more than two hours, it is no longer safe to drink. This is because oat milk is a 
  • Matching search results: Oat milk is a good alternative for those who are lactose intolerant or have allergies to cow’s milk. It is also a good choice for vegans and those who are looking for a dairy-free milk alternative. Oat milk has a creamy texture and a nutty flavor. …

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Does Oat Milk Go Bad? How Long Does Oat Milk Last?

  • Author: eatlords.com
  • Published: 10/28/2022
  • Review: 4.51 (430 vote)
  • Summary: · Even though oat milk is made by soaking steel-cut oats or whole grouts in water, it is still perishable. This means that it requires 
  • Matching search results: For shelf-stable oat milk, you can be pretty certain that it is still drinkable and safe even several months after the best-by date. This, though, is only valid if you have kept it in a cool place, and the bottle or carton has not been opened or …

Does Oat Milk Go Bad?

  • Author: dbldkr.com
  • Published: 09/23/2022
  • Review: 4.23 (483 vote)
  • Summary: · If oat milk is accidentally left out of the fridge for more than 2 hours, consider the temperature and air exposure as well before throwing it 
  • Matching search results: Other oat milk brands are bought in the refrigerated section, and these do need to be kept refrigerated when you arrive home. Then, once the seal is broken, it is recommended that you finish it after a week. This ensures bacteria do not have time to …

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Refrigerated vs. Non-Refrigerated Plant-based Milk – Leaves House

  • Author: leaveshouse.com
  • Published: 12/24/2021
  • Review: 4.06 (556 vote)
  • Summary: Shelf stable products can be kept at room temperature. Once opened though, they should also be kept in the fridge and enjoyed within seven to ten days for 
  • Matching search results: Other oat milk brands are bought in the refrigerated section, and these do need to be kept refrigerated when you arrive home. Then, once the seal is broken, it is recommended that you finish it after a week. This ensures bacteria do not have time to …

Can Oat Milk Go Bad? Heres What You Need to Know

  • Author: purewow.com
  • Published: 02/21/2022
  • Review: 3.99 (515 vote)
  • Summary: According to the USDA, a carton of oat milk can safely sit out for up to two hours . After that, you best toss it out
  • Matching search results: Other oat milk brands are bought in the refrigerated section, and these do need to be kept refrigerated when you arrive home. Then, once the seal is broken, it is recommended that you finish it after a week. This ensures bacteria do not have time to …

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Does Oat Milk Need To Be Refrigerated? It Depends…

  • Author: heyjoecoffee.com
  • Published: 12/12/2021
  • Review: 3.71 (508 vote)
  • Summary: · If oat milk is homemade or needs to be kept chilled, use the 2-hour rule. This rule by the USDA claims that bacteria reproduce faster at room 
  • Matching search results: There’s something about oat milk that works so much better with coffee compared to other plant-based milk. But since oat milk is new and a somewhat unfamiliar ingredient, we need to learn how to use it and where to store it. Let’s clear up the …

Does It Go Bad or Expire? How Can You Tell For Sure?

  • Author: nomspedia.com
  • Published: 09/17/2022
  • Review: 3.44 (377 vote)
  • Summary: Oat milk goes bad from improper storage, whether it’s before or after its past the expiration date. Before you drink it, we recommend that you test it out and 
  • Matching search results: For unopened cartons of shelf-stable oat milk, you can place it in your pantry, kitchen cabinet, or countertop. Just make sure that it stays away from heat sources and light. A cool and dry place is the best storage location, similar to being stored …

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