How Long Is Buttermilk Good For (And Why)?

Exact Answer: 1-2 Weeks (Unopened)

Buttermilk is a drink that is made by churning the butter out of the cultured cream. However, there are several other methods for making buttermilk because some people tend to use sweet cream and some prefer cultured cream. Buttermilk is a dairy drink that is fermented.

Buttermilk, if left unopened could last for at least more than a week under the refrigerator but, when it is opened could last for about two weeks or more than that under proper storage in the refrigerator. On the other hand, if you keep it in the freezer then in both the cases (opened and unopened) it could last for three months at least.

How Long Is Buttermilk Good For

How Long Does Buttermilk Last?

ButtermilkLasting Duration
Buttermilk unopened under the refrigerator1-2 weeks
Buttermilk opened under the refrigeratorMore than 2 weeks
Buttermilk unopened kept under the freezer3 months
Buttermilk opened kept under the freezer3 months

Buttermilk is a nutritious and as well as healthy drink because the drink contains a lot of calcium and other important minerals. The recipe is quite easy and can be made in your home if you have all the required ingredients. Here is the list of ingredients that you will need to make buttermilk at your home.

A cup of buttermilk, a tablespoon of white vinegar, and milk. With such simple ingredients, it is possible for anyone to make buttermilk at home. However, there are many other methods to prepare buttermilk. Check out on the internet and choose the one which suits you the most.

Buttermilk is easy and above all, it is loved by most people. The drink is quite refreshing after a long tiring day. It is best served chilled to enjoy the taste of each ingredient in it. But, instead, you can make it just the way you like. Before you prepare buttermilk make sure that you are not allergic to lactose or lactose intolerant.

Why Does It Take That Long For Buttermilk To Last?

Buttermilk only lasts for about 1-2 weeks because when the drink is kept under the refrigerator it ages and then with aging the drink thickens and then starts losing its buttery flavour. However, when it is kept for more than two weeks you could use it for other purposes like baking and meat tenderizing depending on the acid qualities.

However, if opened should be consumed within a week or two because I am sure you would not like to drink something that will start to lose its taste. If you plan to open after quite a long period then it is best you keep it under the freezer because it could stay up to 3 months or even more than that.

The drink is something that is just a leftover after straining milk fat during the production of butter. However, as mentioned earlier that the drink is nutritious and healthy at the same time. It is a rich source of protein and low in fat.  People suffering from obesity could also drink without any harm.

Other than drinking buttermilk it has got other uses like using it for making pieces of breads, pancakes, and other types of quick loaves of breads. The drink has got a tangy kind of flavour compared to the regular milk that we drink and buttermilk is much thicker.

Sometimes people do not understand when the drink has become spoilt because of the tangy smell it has. So, it is important to know how to check the quality of buttermilk before consuming it. Therefore it is best recommended that you drink it within one week time to get the best quality.


In the end, it is your health that matters the most because if you drink buttermilk at its best quality then you will be getting all the nutrients like proteins and calcium. But, on the other hand, if the drink expires then it will be harmful to your health. However, expired buttermilk could be used for other purposes like baking, and other kinds of stuff.

 The drink could last up to two weeks if it is kept properly under the refrigerator and could last more than that if it is unopened. However, it is best that you consume or use it before one week.


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