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

Are you considering switching to oat milk but wondering how long it lasts before going bad?

Or maybe you’ve had a carton of oat milk in your fridge for some time now, and are uncertain if its still safe to drink.

After all, no one wants to waste food or put their health at risk.

Well worry no more – this blog post aims to help you understand the shelf life of oat milk, when it’s gone bad and what signs indicate spoilage so that you can get the most out of your favorite dairy-free alternative.

Keep reading to find out everything there is to know about storing oat milk and making sure it stays fresh for as long as possible.

What’s Oat Milk?

If you’re like many people, you may be wondering what oat milk is.

Oat milk is a type of milk that is made from oats.

It is a dairy-free and vegan-friendly alternative to cow’s milk.

Oat milk is also lower in calories than cow’s milk and has no cholesterol.

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Oat milk is made by soaking oats in water and then blending them into a creamy consistency.

The resulting mixture is then strained to remove any solids.

Oat milk can be used in the same ways as cow’s milk.

It can be enjoyed on its own, used in cereal or coffee, or added to recipes.

While oat milk does have some health benefits, it is important to remember that it is not a complete source of nutrition.

Oat milk does not contain any calcium or vitamin D, so it is important to get these nutrients from other sources if you are drinking oat milk regularly.

How to Store Oat Milk?

If you’re like me, you love oat milk. It’s creamy, delicious, and versatile.

But did you know that there are a few key things you should do to ensure that your oat milk stays fresh and delicious? Here are a few tips:

  • Store your oat milk in the fridge. This will help it to last longer and keep it tasting its best.
  • Make sure to shake your oat milk before using it. This will help to distribute the creaminess evenly.
  • Use your oat milk within 7-10 days of opening it. This will help to ensure that it is at its peak freshness.
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Following these simple tips, you can enjoy delicious, fresh oat milk for days to come.

How Long Does Oat Milk Last?

Knowing how long a product will last is important for any grocery item, and when it comes to oat milk, there can be some confusion.

Depending on the variety you buy, oat milk can last up to ten days in the refrigerator after opening.

However, if you buy an unrefrigerated variety without preservatives and have not opened it yet, it could have a shelf life of several months.

The key is to check the “use by” or “sell-by” dates printed on the packaging and make sure that you drink the milk before that date expires.

If you store it properly after opening – in a cool place but not necessarily the refrigerator – it should stay fresh for up to five days beyond those dates.

Can You Freeze Oat Milk?

Yes, you can freeze oat milk.

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Oat milk is a great alternative to dairy milk, and it’s also lactose-free, vegan, and gluten-free.

Plus, it’s high in fiber and calcium.

However, freezing oat milk can cause it to separate and become grainy.

For this reason, it’s best to use frozen oat milk within two months of freezing it.

Here are some tips for freezing oat milk:

  • First, pour the oat milk into an ice cube tray or freezer-safe container.
  • Then, place the ice cube tray or container in the freezer.
  • Freeze the oat milk for two to three hours, or until solid.
  • Once frozen, transfer the oat milk cubes or block of frozen oat milk to a resealable freezer bag.
  • Label the bag with the date that you froze the oat milk.
  • Use frozen oat milk within two months for best quality.

When you’re ready to use frozen oat milk, thaw it overnight in the refrigerator.

You can also microwave frozen oat milk for 30 seconds to 1 minute on 50% power, or heat it over low heat on the stovetop until thawed.

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Once thawed, shake or stir the oat milk before using it.

How to Tell If Oat Milk is Bad?

If you’re wondering how to tell if oat milk has gone bad, there are a few things you can look for.

First, check the expiration date on the carton.

If it’s past that date, the milk is probably no longer good.

You can also give the milk a sniff test. If it smells sour or otherwise off, it’s best to discard it.

Finally, give the milk a taste test. If it tastes sour or otherwise unpleasant, it’s time to say goodbye to your oat milk.

So, how long does oat milk last? Once opened, oat milk will last about 7-10 days in the fridge.

However, if you notice any of the signs that we mentioned above, it’s best to err on the side of caution and toss it out.

Better safe than sorry.


We hope you found this blog post helpful in answering the question, “How long does oat milk last?”.

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We went over the shelf life of oat milk, how to store oat milk, and how to tell if oat milk has gone bad.

Oat milk is a great alternative to cow’s milk and can be used in many different ways.

Be sure to check out our recipes for some great ideas on how to use oat milk.

Yield: 1 Serving

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

How Long Does Oat Milk Last? Does it Go Bad?
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes


  • Oat milk
  • Air-tight containers or Ziplock bags
  • Labels and markers


  1. Store your product in an labelled container in a cool, dark place like the pantry or fridge.
  2. If your food is frozen, allow it to thaw in the fridge before cooking.
  3. Make sure to look for signs that your food has gone bad before eating it.
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