Can fish sauce go bad in the fridge?

In this brief article, we are going to answer the question “can fish sauce go bad in the fridge?”. We will discuss how to store fish sauce and if it can be frozen or not. We will further discuss the signs of fish sauce going bad and the consequences of consuming spoiled fish sauce.

Can fish sauce go bad in the fridge?

Though a sealed fish sauce bottle may be stored in your pantry, it is best to keep it in the fridge if you need it undisturbed for a long time.

This sauce can keep for up to six months in the pantry or a few weeks in the cabinet due to the high salt content. However, it is preferable to store it at a lower temperature in order to preserve its quality for a longer amount of time.

When stored in a warm environment for more than a week or two, the sauce often loses its characteristic flavor. When you need to use it for longer, the temperature in the fridge is optimal for preserving its quality.

Remember that high-quality fish sauce has no preservatives. As a result, it will last less time than a lower-quality product containing these chemicals.

Can you freeze fish sauce?

It is not necessary to freeze the fish sauce in the freezer because it’s preservative-packed with salt. When it is not opened and stored at room temperature, it will last a long time.

Once you’ve started using it, simply put the bottle in the refrigerator, where it will keep fresh and unspoiled for months.

Salt is a bacteria-killing preservative that makes this food safe to eat for a long time.

Food cannot deteriorate without these microbes. As a result, storing this condiment in a pantry or refrigerator for months, if not years, will suffice.

How to Store Fish Sauce?

Fish sauce can be stored similarly to teriyaki or soy sauce. You may keep the bottle in the pantry at room temperature if it is unopened. 

Keep it out of direct sunlight and heat, as they might degrade the sauce’s quality.

After you’ve opened the bottle, ensure it’s always firmly sealed. For the greatest quality, store it in the refrigerator after opening.

Because this condiment includes a lot of salt, it won’t go bad if you keep it out for a week.

However, chillin it in the fridge will make it last longer, so it’s entirely up to you where you keep it.

How long does fish sauce last?

The best-by date is printed on many fish sauce bottles. This date indicates how long the goods should stay fresh and flavourful. Of course, because the fish sauce has no perishable components and is heavy in salt, it may easily be stored for a long, even after the expiration date. 

As a result, some producers do not include any dates on the label other than the bottling date.

Fish sauce’s quality declines with time, despite the fact that it seldom spoils. That indicates that over a lengthy period of storage, the flavor may get weaker and the taste may become deficient.

It’s hard to predict when it will spoil and you’ll be the one to evaluate whether or not it’s suitable for usage.

Unopened fish sauce bottles should last a year after expiration in good condition. A refrigerated opened bottle should keep its quality for at least a year. Of course, it will likely retain its freshness for a considerably longer period of time.

How to tell if fish sauce is bad?

It’s very unlikely that fish sauce will spoil, therefore you should always be aware of the signs of spoilage to tell if the fish sauce has gone bad.

The appearance of transparent crystals is the first clue that the sauce may have started to spoil. The production of crystals is a natural process that has no effect on the condiment’s flavor.

Second, certain particles may be seen floating in the sauce. These are proteins that are produced during the precipitation process. 

It’s a natural reaction that happens when the fish sauce is subjected to temperature variations. It’s completely innocuous and has no impact on the product’s safety or quality.

Some of the warning signals that your fish sauce is about to spoil are discussed too.

Throw aside the condiment if the surface of the container shows symptoms of mold or yeast. The same goes if the scent or color has altered significantly.

Taste the condiment to see whether it’s fine to use if it looks and smells okay. If you’re not sure if it’s safe to eat, toss it out like any other food.

What are the risks of consuming an expired fish sauce?

When you consume food that has passed its expiration date, you may get food poisoning symptoms.

Fish sauce, on the other hand, is unique. This product will not go bad for years because of its production method and high salt levels, and its taste will not alter.

Salt acts as a preservative, and prevents it from deteriorating, and there will be no harmful repercussions if you eat an old condiment still in its original package.


In this brief article, we answered the question “can fish sauce go bad in the fridge?”. We discussed how to store fish sauce and if it can be frozen or not. We further discussed the signs of fish sauce going bad and the consequences of consuming spoiled fish sauce.


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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.