Can oat milk go bad?

In this short article, we will provide an answer to the question “can oat milk go bad?” and the health benefits of oat milk.

Can oat milk go bad?

Yes, oat milk can go bad. Even though oat milk is vulnerable to deterioration and spoiling, properly stored oat milk may assist to maintain its quality and freshness longer.

Keeping Oat Milk in Refrigeration

It is not necessary to have a rocket scientist degree to preserve unopened oat milk. Storage in a cool, dry environment will ensure that the beverage remains shelf stable for an extended length of time in sealed or unopened oat milk containers.

An excellent alternative is to store the sealed oat milk containers in a closet or dry storage room; a refrigerator also works well, but it is not the most cost-effective or efficient way to utilize cold storage space.

It is not possible to freeze oat milk cartons that have not been opened. Given that oat milk is mainly composed of water, and that water expands as it freezes, the container will burst and the oat milk will be sprayed everywhere.

A separate pantry in the kitchen or, if you have one, a separate pantry in the basement should be used to store bulk oat milk. With proper storage conditions, sealed containers should keep their quality and freshness for up to nine months, and perhaps much longer, assuming that the ambient temperature stays steady.

Once the seal on the container has been broken and the contents have been accessible, the oat milk becomes perishable and no longer has a shelf life. To prevent evaporation or moisture buildup, the container must be well sealed, and the oat milk must be refrigerated to keep it fresh for up to seven days.

How Long Can Oat Milk Be Kept After It Has Been Opened?

Conventional wisdom holds that leftover oat milk should be eaten within four to seven days after being refrigerated. Even though this is a good rule of thumb to follow, it is always a good idea to double-check the label.

While oat milk is typically prepared from strained blended oats and water, several brands use a range of extra ingredients to enhance the flavor and texture. A drop of oil or a sprinkle of sugar is sometimes added to smooth out the liquid or enhance the flavor.

These little changes in component composition and production methods may have an impact on shelf life, especially for oat milk that has been opened.

Some businesses recommend using their product within four days of opening it, while others recommend using it up to 10 days after it has been opened.

Methods for Determining Whether or Not Your Oat Milk Has Been Contaminated

Check for the following indications that your oat milk has gone bad to determine if it has soured:

  • If the milk is lumpy or too thick, it should be thrown out.
  • As milk deteriorates, its color may change from creamy white to yellowish-green. If this happens, it should be discarded.
  • Before drinking your milk, give it a good sniff to make sure it’s not spoiled. If anything smells weird or strange, throw it away.
  • If everything else seems to be in working condition, do the last taste test to ensure that everything is satisfactory. If you are satisfied with it, you may keep it. If it has an odd flavor, it should be discarded.

The Health Advantages of Oat Milk

Vitamins A, D, B2, and B12, as well as minerals such as calcium, are often added to oat milk to improve its nutritional value. It’s devoid of lactose, soy, and nuts, too. You should try this if you follow a plant-based diet, are lactose intolerant, or have an allergy to nuts or soy products.

Because of its high beta-glucan content, it may be beneficial in lowering blood cholesterol levels. Beta-glucan is a kind of soluble fiber that has been linked to improvements in cardiovascular health. Finally, oat milk has been supplemented with calcium and vitamin D, which helps to maintain bone health.

Is it possible to get sick from drinking tainted oat milk?

Certainly, consuming poor-quality oat milk is a bad idea that almost always ends in sickness. Poor-quality oat milk may cause food poisoning, which can lead to severe digestive problems. It also has an unpleasant odor that makes you feel nauseous even before you consume it.

Generally speaking, consuming inferior oat milk is not a good idea since it may cause stomach pain, diarrhea, vomiting, and nausea.

Is it possible that oat milk may cause diarrhea?

Oat milk does not cause diarrhea. In contrast, if you have a negative reaction to this milk, studies indicate that you may be allergic or sensitive to avenin, which is an oat protein; as a result, it is advised that you avoid milk if you are experiencing diarrhea.


In this short article, we provided an answer to the question “can oat milk go bad?” and the health benefits of oat milk.


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.