Can you freeze sour milk? Sour milk is one of the popular dairy products. It is used for cooking, baking, or flavoring soups as well as in a dip or on a baked potatoes. The thing is – there are some situations in which you would like to extend the shelf life of this dairy product. For example you use sour milk only for cooking purposes, you’ve got a half empty jug of it and you can’t find a way to utilise the rest of the product within the next couple of days. Or you’ve found a great deal on sour milk and you would like to buy a few containers of sour milk more than usually. In both of the mentioned situations freezing the sour milk seems to be the only solution. Sour milk, similarly to milk or yogurt can be frozen. It is, however, not recommended. There are a few more things about freezing sour milk that you should be aware of.

How freezing affects sour milk

Freezing sour milk can extend its shelf life by 4 to 6 months. You can freeze this dairy product in its original container or any other one. Please remember that the container should be airtight so its contents won’t absorb other odors from the freezer. Similarly to yogurt and milk, freezing sour milk affects its taste and texture. Sour milk separates while freezing and its consistency changes considerably. After thawing it’s similar to the consistency of cottage cheese. Unfortunately, in case of sour milk, you won’t be able to bring back the texture of fresh sour milk by stirring and shaking the thawed product. These activities will help a little, but the texture will stay considerably different from the expected one.

Fried egg, potatoes and sour milk
Image used under Creative Commons from Tom Karas

When to consider freezing sour milk

As I’ve mentioned earlier, the consistency of sour milk changes noticeably after freezing and thawing this dairy product. Fortunately enough, in some cases freezing sour milk is worth considering. Of course, if need sour milk in its original form (e.g. in a dip or on baked potatoes), frozen and thawed sour milk won’t meet your needs. However, if you need this dairy product for cooking or baking purposes, or to stir it into a soup, frozen and then unfrozen soured milk should do the trick. If you are unsure whether the results you’ll get will be satisfactory, you can run a little trial. Freeze a small amount of sour milk, unfreeze it after a few days, add it to your dish and check how does it taste. If the taste is fine, you can freeze sour milk for this purpose freely. If you need to extend shelf life of this dairy product, try storing it upside down in the fridge. Many people state that it extends the shelf life of the liquid considerably.


Sour milk is often used in cooking and baking. You can freeze sour milk but it is not recommended and in most cases frozen and thawed sour milk won’t meet your needs.