Can You Freeze Oat Milk?

In recent years, plant-based alternatives to dairy milk have become hugely popular. And oat milk is one such product that is enjoyed by people in coffee, smoothies, and in a wide range of baking recipes as a milk replacement.

Some people make their own oat milk, while others buy it from the supermarket where it can be expensive, prompting shoppers to buy it in bulk to save money.

So, is it possible to freeze oat milk to extend its shelf life? Let’s take a look now.

The Quick Answer

Yes, you can freeze oat. Oat milk can be frozen for around 6 months. You need to be aware that oat milk that has been frozen will change its consistency slightly and will become grainy after thawing. Only freeze oat milk if it’s absolutely essential to do so.

How to Freeze Oat Milk

If you’ve decided to go ahead with freezing oat milk, you’ll be pleased to hear it’s a straightforward process. If you’ve bought it in a carton from the supermarket, simply put the carton in the freezer, unopened.

If your oat milk is homemade or if you want to split a carton into smaller sizes, decant your oat milk into small, freezer-safe bottles, leaving around an inch of space at the top for expansion. And that’s it! 

3 Tips for Freezing Oat Milk

Now you know how to freeze it, we’ve got our 3 top tips which we strongly recommend following when freezing oat milk to have the best results:

  • Think Twice – Oat milk that has been purchased from the supermarket should be consumed within ten days of opening, but they tend to have a relatively long best by date. As such, oat milk lasts much longer in the fridge than dairy milk, so think twice before freezing it, as it may not be necessary, depending on its intended use. 
  • Homemade Has a Shorter Life – Homemade oat milk won’t last as long as shop-bought oat milk. While it’s usually healthier, it doesn’t consist of the range of preservatives that are included in shop-bought products, reducing its potential shelf life. Therefore, if you make your own oat milk in batches, you might need to freeze it if you haven’t used it within five days, or you risk it going bad. 
  • Strain After Thawing – As mentioned, oat milk will become grainy once it has thawed. To reduce its graininess, you can strain it through a cheesecloth to remove the small granules of oats. This will help to improve the texture of your oat milk once it has been thawed, but you may still notice a slight decrease in taste, and it may taste a little watery when compared to fresh oat milk.

How Long Can You Freeze Oat Milk?

You can freeze oat milk for around six months.

Shop-bought oat milk tends to freeze better than homemade alternatives, thanks to the preservatives included in the ingredients. But be mindful that freezing oat milk will affect its overall texture, so this will impact how you intend to use it.

You Can Freeze Oat Milk for up to 6 Months

How Do You Defrost Oat Milk?

The only way to thaw oat milk is to remove it from the freezer and place it in the fridge. This is true for both homemade and shop-bought oat milk.

It will take around 8-10 hours to defrost oat milk, so it’s a good idea to remove it the night before if you plan to use it for breakfast the following day. Once thawed, you should use your oat milk within ten days. 

Can You Refreeze Oat Milk?

We don’t recommend refreezing oat milk. Because of the change in texture from freezing oat milk only once, its texture and taste will deteriorate even further if you thaw and then freeze it again.

While it’s good to be concerned about wastage, you don’t want to render your oat milk undrinkable, either! So, if you opt to freeze oat milk, do it only once. 

Does Oat Milk Freeze Well?

As you can see from this article, oat milk doesn’t freeze well. The grains tend to separate, and you will be left with a grainy, far from smooth texture.

While straining your oat milk is a potential solution to this, doing so will then reduce the taste and make your oat milk a little watery.

As such, we only recommend freezing oat milk if it’s absolutely necessary, and given that oat milk has a longer shelf life than its dairy counterparts, you should plan to use oat milk before its given best-by date. 

Related FAQs

If you’ve still got questions about freezing oat milk or milk in general, then these may help:

Can You Freeze Other Plant-Based Milk?

Yes, you can free other non-dairy milk products. Almond milk, coconut milk and soya milk can all be frozen but also all have similar issues with texture once they are defrosted. 

Is It Safe to Freeze Oat Milk?

It is perfectly safe to freeze it. That’s not why you should avoid doing so. The problem is when you come to thawing oat milk. You’ll find that the texture changes and you’ll no longer have smooth milk but it will have a grainy texture. 

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1 thought on “Can You Freeze Oat Milk?”

  1. You have mentioned that defrosted oat milk tends to become lumpy as the grains separate.
    Would it be possible to reintegrate the grains back into the liquid by using a soupifier (the attachment on a food whizzer that turns a stew with lumpy bits into a stodgy liquid without lumps)?


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