How to know if curd is spoiled? (5 easy methods)

In this brief guide, we are going to answer the question “how to know if curd is spoiled”, discuss the different methods of identifying spoiled curd and the potential health effects of consuming spoiled curd.

How to know if curd is spoiled?

To know if curd is spoiled you can check the expiry date if it is passed or not. Spoiled curd gives off a sour and rancid smell having a thick lumpy texture. Spoiled curd has a sour taste. Spoiled curd also tends to get a brownish shade.

Sometimes it becomes difficult to identify whether the curd is spoiled or not. Usually, we take second opinions to remove our doubts about whether to throw it out or not. By reading this blog you can easily identify and decide about your curd by obeying any of the 5 methods discussed below. 

Also, we will tell you about the shelf life of curd and discuss the health effects of consuming spoiled curd.

1) Checking the expiry date:

If you are consuming packaged curd then you should firstly check the expiration date. If the package is opened and refrigerated, then it is best to consume that curd within 1-2 days. If the package has not been opened at all then you may consume it before the expiry date. 

Although, this is not the best way to tell whether the curd is spoiled or not because there may be faulty packaging that can spoil the curd quickly or there may be some issues from the manufacturer’s side which may deteriorate the quality of the curd.

2) Smell:

The traditional way of telling the curd whether it is good or not is by smelling. If you smell something foul or sour or rancid then it is probably due to the spoiling of curd. If you are experiencing a strong smell then it is confirmed that the curd is spoiled. If the curd is spoiling but is still edible then you may experience a very slight foul smell. This can be very confusing when deciding about the quality of curd.

3) Checking the texture:

Most of the time when the curd is spoiled, we can see liquid floating over it. This is also a strong sign that the curd is spoiled. If you swirl the curd a little bit then you may see some foul texture also. 

You will see that the texture of the curd is a little uneven or thick or lumpy. You can also decide the quality of your curd by checking the texture also.

4) Color:

If you experience that the color of your curd is a bit brownish or yellowish then never consume it. Surely there may be some mold growing in it. It is better to throw it away because it can be harmful to our health. Sometimes a black or brown mold starts growing inside the curd hence deteriorating the quality and changing the color also. 

There may also be a chance that the mold is growing inside the curd, so check by taking out a chunk of curd with the help of a spoon. It is highly recommended to throw away curd if you see any sign like this.

5) Taste:

If you experience some odd or sour taste then it is confirmed that the curd is spoiled. Taste gives a sure sign about the quality of the curd. If you are confused after following all of the methods above and still your mind is not clear what to do then tasting a little bit of curd can surely make you identify and remove all of your doubts about the curd.

Shelf life of curd:

Once you bring curd from store to home, it is recommended to store it in refrigerators with a temperature lower than 5 degrees celsius. Try not to keep the curd at room temperatures for more than 1-2 hours. 

If you keep your curd at a temperature higher than 90 degrees Fahrenheit, then the curd starts to become sour. This means that bacteria grow faster in room temperatures and slower in low temperatures.

What happens after consuming spoiled curd:

Mostly spoiled curd tastes very much sour. You won’t like to eat spoiled curd at all because of its foul taste and smell. However, if you still consume spoiled curd then it may lead to foodborne illnesses. In most cases, people usually experience some stomach disorders and mostly recover on their own. In worst cases the patients may experience symptoms like:

Most people recover on their own and in severe cases, the doctor may prescribe some light medications from which the patient recovers.


In this blog, we discussed the 5 easy methods on “how to know if curd is spoiled?” We can simply identify spoiled curd by checking the expiry date, smell, texture, color, and taste. We also discussed the shelf life and related foodborne illnesses after consuming spoiled curd. It is highly recommended not to consume spoiled curd at all.

I hope this blog will be helpful for you. If you have any questions or comments please let us know.


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.