The Best Way to Store Potato Milk

French fries, baked potatoes…potato milk? That’s right – you can drink milk from the simple potato.

Potato milk is made with potatoes and a few other ingredients (we’ll explain more about them in this article) – but how do you store this intriguing plant-based milk alternative?

The best way to store homemade potato milk is in a covered or sealed container in the fridge for up to four days. If you buy premade potato milk, keep it in the refrigerator once opened and use it within five days of opening it.

Store sealed shelf-stable potato milk (UHT milk) at room temperature until the expiration date.

If you’re curious about potato milk (we certainly were when we first heard about it), then read on to learn a bit more!

What is potato milk?

If you’ve never heard of potato milk, you’re not alone – it’s not very common and you won’t find it in the milk section at your grocery store next to the more common types of milk like almond milk and soy milk.

Potato milk is made by boiling potatoes blending them with water and then straining the mixture. It’s considered much more efficient in terms of water usage than other plant-based milks and is a good plant-based option.

The only commercial brand of potato milk (right now) is DUG, a Swedish brand. They sell three types of potato milk; some of the varieties have additional ingredients like pea protein, vegetable oils, sweeteners, and added nutrients.

You can also make homemade potato milk using easy-to-find online recipes. Many DIY versions suggest adding almonds for added creaminess, so keep that in mind if you have a nut allergy.

What’s the best way to store potato milk

Homemade potato milk

If you’re not buying DUG potato milk online, you’ll likely be making your own potato milk since there aren’t many commercial options available. If you make homemade potato milk, you should store it in the refrigerator at all times until it’s gone. 

Potato milk will last around four days in the fridge when stored in a sealed or covered container.

Premade potato milk (UHT)

Commercial potato milk is treated with high temperatures so it can be shelf-stable in aseptic packaging. Shelf-stable UHT potato milk will likely last months at room temperature (avoid excessively hot temperatures above 90 degrees Fahrenheit), but go off of the use-by or expiration date printed on the package.

Once you open a container of potato milk, it should be refrigerated and used within five days.

Factors that influence flavored milk storage

Temperature

Potato milk doesn’t have a long shelf life once it’s made (homemade) or opened (premade/UHT milk). Pop it in the fridge whenever you’re not using it, which will help prolong its shelf life.

For shelf-stable potato milk, avoid storing it at high temperatures (above 90 degrees Fahrenheit) which can shorten its shelf life by making the fats go rancid (there is added rapeseed oil in DUG potato milk).

Homemade vs. commercially made

As we mentioned earlier, there’s one main manufacturer of potato milk right now. You’ll get more bang for your buck shelf life-wise with the UHT potato milk that can be stored for months at room temperature vs. the four-day-long shelf life you’ll get making it yourself.

Signs that flavored milk has spoiled

Taste: Homemade potato milk recipes generally call for almonds to help give it creaminess, so it should have a mild nutty flavor. If you use sweeteners in homemade potato milk, it should taste slightly sweet.

Commercially made potato milk should taste slightly sweet from the added sugar, or neutral if you choose the unsweetened type.

If potato milk has an off-putting flavor (bitter, sour, etc.) then it’s likely going bad.

Appearance: Potato milk should have a creamy, off-white appearance. If the color has changed since you made it or first opened it, or if there are clumps or grittiness to it, then something is off.

Smell: If you give the container a sniff and you don’t like what you smell, it’s a sign that the potato milk should probably be tossed!

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