Can you freeze oat milk? That is the burning question we all want to know the answer to!
Whilst any non-dairy milk is great for the environment compared to cows milk, not all non-dairy milk is equal. Oat milk is a great sustainable choice. It’s better for the environment than many other vegan milk substitutes such as almond, coconut, and rice milk.
As such, I drink a lot of oat milk. I’ve written here on which oat milk is the best, if you are interested. I almost always finish an opened carton of oat milk. However, on the odd occasion when we I am going away somewhere for a few days and can’t take the milk with me, then this poses a problem.
In those instances, it feels wrong to pour perfectly good oat milk down the drain. As a result, I looked for ways to preserve my precious oaty goodness.
Yes, You Can Freeze It!
Good news: it turns out that yes, you can freeze oat milk.
Oat milk settles in the freezing process, so it can be a little grainy when you defrost it. However, it’s completely fine to use. Due to the graininess, I personally would not use defrosted oat milk in tea, coffee, or cereal. However, when heated up you don’t notice the graininess, and it’s great for use in cooking.
How to Freeze Oat Milk
For that reason, I freeze oat milk in an ice-cube tray so I have pre-portioned sizes of frozen milk on hand that I add directly to sauces. Pre-portioning the milk before freezing also means you can add it to your cooking without the need to defrost the milk beforehand.
Your oat milk will be good for up to three months in the freezer.
I use a plastic ice-cube tray because I’ve had it forever, and binning it and replacing it with a metal ice-cube tray is not in any way sustainable. However, if you don’t have an ice-cube tray you can get lovely metal ones*.
I had tried freezing milk in jars, but unless your recipe calls for a lot of milk then I’ve found the milk just languished in my fridge for too long. The last time I tried this method we ended up having to pour a jar of milk down the drain as nobody wanted it in their cup of tea. As such, it’s ice-cube trays all the way now!
How to use your frozen cubes
Frozen cubes can also be added to smoothies. Because you’re blending the smoothie, this means you won’t detect any graininess.
I’ve also found that Oatly Barista Milk separates when it’s frozen. It’s made with rapeseed oil so the oil tends to rise to the top. However, giving it a good mix when you are cooking sorts that all out.
Never refreeze already defrosted oat milk, and as always, make sure your milk hasn’t expired before freezing it.
What About Freezing Soy Milk Or Any Other Type of Non-Dairy Milk?
All other types of no-dairy milk (and regular cows milk) can be frozen. Again, they might go grainy like oat milk, or may lose some of their texture or taste, so I’d always recommend the ice-cube tray method.