Buttermilk is a flexible ingredient that gives a variety of foods a tangy flavor and a creamy texture. It’s a common ingredient for baking, marinating, and even some drinks. Unfortunately, buttermilk can spoil if it is not consumed quickly enough or is not stored properly, just like other dairy products. To guarantee the quality and safety of your recipes, it is crucial to know how to tell whether your buttermilk has gone bad.
You might not be certain if your buttermilk is still safe to use if it has been sitting in the back of the refrigerator for some time. Since buttermilk has a distinctively acidic flavor, it might be challenging to determine whether it is bad based solely on taste. But, buttermilk, when stored properly and consumed within the recommended timeframes, remains safe for consumption even after long storage periods.
1. What is Buttermilk?
Buttermilk is fermented cultured milk. Buttermilk is a thicker and slightly lumpy liquid than milk. Traditional buttermilk is the liquid left after churning whole milk into butter, and modern buttermilk is a cultured, fermented dairy product with added bacteria cultures.
Buttermilk is used to add taste to cakes, scones, and fried chicken. They are also used sometimes for dressing salads, fried foods, etc. Buttermilk smells sharp, tangy, and slightly buttery. It should smell like mild vinegar, not super sour. Sometimes, you can use this buttermilk to make sauces using simple recipes. Moreover, buttermilk is a good source of protein, calcium, and probiotics. Probiotics are good bacteria that are beneficial for the gut and liver health.
1.1. What is the Work of Buttermilk in the Recipes?
Buttermilk has an acidity from fermentation. The acidity of buttermilk helps to balance sweetness in sweet dishes. It is also used as an activator of baking soda in the recipes. With the help of baking soda and buttermilk, we make fluffy batters for cakes and muffins. Buttermilk is used as a protein breaker in meats, which makes it softer and tender.
1.2. How to Make Buttermilk at Home?
The ingredients that are required to make buttermilk are one tablespoon of lemon juice or white vinegar and a cup of milk.
Instructions for making buttermilk:
- Mix milk and lemon juice or white vinegar. Stir the mixer and allow it to settle for 5- 10 minutes until it curdles slightly.
- Once the mix starts slightly thickened and lumpy, use in a recipe as a 1:1 ratio for buttermilk.
- The ready liquid is a buttermilk.
- You can use it for various recipes and ingredients.

2. How to Know if Buttermilk is Bad?
Buttermilk is frequently kept in the refrigerator for an extended period because it is frequently used in baking and not much else. There are some ways to know if buttermilk is in usable condition or not. These techniques are:
- Normally, buttermilk is good for 1-2 weeks. However it is necessary to check the freshness before using the buttermilk.
- Moreover, buttermilk has a typically sour smell, but when the smell changes, you should check whether the scent is rancid or not.
- Buttermilk is bad or good and can be decided by texture. If buttermilk is smooth and slightly thick, then it is good, or if it has been separated into thick layers, then it is bad.
- The color of buttermilk is pale yellow or white. If the color is different from pale yellow and white, then there is a higher chance that buttermilk is bad.
- If there is mold in Buttermilk, then it is bad.
3. The Quality of Buttermilk
After discussing whether buttermilk is bad or good and techniques to know about the quality of buttermilk, we are going to discuss everything about the buttermilk. Before knowing about buttermilk, we should know a few terms.
3.1. Powdered Buttermilk
This is a dry form of buttermilk that is an alternative to liquid buttermilk. Powdered buttermilk is made using a drying cultured technique. The flavor of powdered buttermilk is tangy. This can be included in a variety of recipes like pancakes, waffles, biscuits, snacks, cornbread, fried chicken, and salad dressing.
3.2. Sour Cream
This is a fermented dairy product made from cream. That has been thickened and acidified with bacterial cultures. This cream is slightly sour and tangy in flavor. The texture of sour cream is creamy. This cream is one of the most popular ingredients in many cuisines in the world. Sour cream contains a good source of protein, calcium, and lactic acid.
3.3. Skim Milk
This milk is almost fat-removed. Skim milk is also known as fat-free or non-fat milk. Fat is removed by spinning whole milk in a centrifuge to separate fat globules. After that whole milk is homogenized to reduce the size of the fat globules. Skim milk is a good source of protein, calcium, and other nutrients. Skim milk is used in a variety of dairy products like yogurt, cheese, and butter.
3.4. Heavy Cream
This is a thick, fatty part of the milk that is on top of it when left alone. Heavy cream contains 36 per cent of milk fat. This gives a rich and creamy texture and flavor. It is rich in Vitamins D, E, K, and A and also calcium, zinc, phosphorus, etc.
3.5. Buttermilk Cubes
Buttermilk cubes are made by pouring the buttermilk into the freezer until the buttermilk is solid. Once the cubes are formed, store them in a freezer. Buttermilk cubes are the most convenient and versatile way to store buttermilk for a long period. These cubes can be used instead of liquid buttermilk.
3.6. Fermented Milk
When it is fermented with lactic acid bacteria, it is known as fermented milk. The texture of fermented milk is thick and creamy. The flavor of fermented milk is sour. They are good sources of probiotics that help to improve gut health. Fermented milk is used to make smoothies, parfaits, and dips. They are a good source for any healthy and delicious addition to any diet.

4. How to Store the Buttermilk?
Buttermilk should be stored in a frozen container. It should be shaken well before use to show that it can be separated. Frozen buttermilk can be stored for three months, and cubes are easier to store in the freezer. Cubes are versatile ways of storing buttermilk for long periods. Sotting buttermilk properly, as stated above, can keep it usable for long periods of time.
5. The Cultured and Traditional Buttermilk
The buttermilk we buy at local stores or shops is different from the originally produced buttermilk in the farm. The buttermilk you buy at local stores is also known as cultured buttermilk and the originally produced on farms are traditional buttermilk.
Cultured buttermilk is produced using a process similar to that of yogurt. Bacterial cultures, salt, and citric acid are added to skim milk and fermented for 12- 14 hours. This fermentation converts sugar into lactic acid and produces a tangy sour flavor for the buttermilk.
Traditional buttermilk is a side product of the butter-making process when butter is saturated from the liquid, and the leftover liquid is fermented for 2-3 hours after that liquid is known as traditional buttermilk. The traditional buttermilk is less tangy than cultured buttermilk in a comparison of taste between the two of them.
6. The Top Benefits of Buttermilk

6.1. Easier to Digest than Other Diary Products
Buttermilk contains lactic acid that makes lactose content easier to digest. Lactose is the natural sugar that is found in every dairy product.
Many people in this world are lactose intolerant, which means that their bodies don’t contain the enzymes needed to break sugar. But buttermilk contains lactic acid which makes it easier to digest than other dairy products.
6.2. Supports Strong Bones
Buttermilk is a good source of calcium and vitamin D. Buttermilk has been fortified, which means it is rich in vitamin K2 (the full-fat variety). These nutrients are important for increasing your bone strength and preventing bone diseases like osteoporosis. However, many get enough of these nutrients, so buttermilk can be efficient because it is rich in these nutrients.
6.3. Healthier Gut
Buttermilk contains probiotics, which make our gut and intestines healthier. Probiotics are good living microorganisms or bacteria because they help break down food and absorb the food easily with the help of their enzyme.
6.4. May Improve Oral Health
Periodontitis is the inflammation of your gums that is caused by periodontal bacteria. Buttermilk has an anti-inflammatory effect on the skin cells that line your mouth and stop germinating the periodontal bacteria in the mouth. Calcium intake from buttermilk has a significant impact on the reduction of periodontitis.
6.5. Lower your Cholesterol Levels
Buttermilk contains compounds like Sphingolipid, which are responsible for this effect. Because they inhibit the absorption of cholesterol in your Gut. Spin holds are parts of the milk fat globule membrane in buttermilk. Usually, consuming at least ½ cup of buttermilk reduces cholesterol from your guts.
6.6. Lower Blood Pressure Levels
Buttermilk can level lower blood pressure because it contains bioactive proteins, is a good source of potassium, and is saturated fat. It also improves insulin sensitivity in our body. In a study, it was found that consuming buttermilk has led to a positive reduction in blood pressure levels.
7. Negative Impacts of Buttermilk
Buttermilk has several negatives or downsides related to its salt content and the potential to create allergies in a few people.
7.1. High in Sodium
Buttermilk contains a good amount of sodium nutrition. This makes it important to check whether a person is capable of assimilating sodium into the body. Sometimes the consumption of sodium may cause a risk of high blood pressure because some people are salt-sensitive. High blood pressure creates a risk of heart attack.
7.2. Allergic Reactions and Digestive Issues
Buttermilk contains lactose, which is a natural sugar in dairy products. Many people are lactose intolerant, which means their bodies cannot break down sugar. This is because enzymes that break the sugar are not produced in lactose-intolerant people. Lactose-intolerant people cannot digest buttermilk.
8. Key Note
In this article, we have first discussed how to know whether buttermilk is bad or not. After learning about this, we came to know about some words that are frequently used in the article. Those words are powdered buttermilk, sour cream, skim milk, buttermilk cubes, and fermented milk.
After discussing these topics, we came to know about what buttermilk is, how buttermilk can be made at home, the benefits of buttermilk, the downsides of using buttermilk, and the differences between cultured and traditional buttermilk.
This article briefly discusses buttermilk and its benefits for the health of human bodies. After reading the article, we can say that buttermilk is one of the best dairy products for consumption because it contains nutrients like calcium, vitamin D, vitamin K2, sodium, carbs, protein, among others.
Last Updated on by Arnab