Published June 18, 2024

Normal soy sauce contains lots of sodium, which is a natural preservative. This means that it can last forever in your cupboard if it remains unopened. Once opened, however, the quality of the soy sauce will start to decline after about six months. But if you put it in the fridge, it can be kept for around 2-3 years before going bad. 

Shoyu and Tamari are types of soy sauces that can last up to two years when unopened and stored properly. After being opened, they retain their flavor well for three months but may still be used beyond this time frame safely.

Bottle of soy sauce

Composition and Types of Soy Sauce

The unique taste of soy sauce comes from soybeans, wheat, water and sodium chloride. It is traditionally fermented for several months which gives it a strong umami flavor. There are different types of soy sauces available to suit various diets and preferences.  You can also use many substitutes for Soy Sauce.

For example, gluten-free soy sauce is made with different grains. Tamari is a less salty and thicker version that is usually gluten free as well. 

Shoyu on the other hand is a Japanese type of soy sauce that combines wheat with soybeans and can be light or dark in color depending on its strength. Light Soys are saltier while dark ones are sweeter and generally thicker.

There are also Soy sauces which do not contain gluten which can be consumed by people who have celiac disease or allergies.  

Dark soy sauce contains lots of antioxidants which help in fighting against free radicals that cause damage to cells through oxidation. Chinese Soy Sauce has more soybeans than wheat while Japan offers many options such as; light & dark soya sauces, tamari ,white soya and double fermented varieties.

The flavor of the soy sauce depends upon how long it was fermented for.

Does Soy Sauce Go Bad?

So Does Soy Sauce go Bad?  Soy sauce can last a long time if it’s stored well. Its high sodium and fermentation make it long-lasting. Unopened soy sauce can keep forever in a cool, dark spot.

An open bottle stays good for up to six months at room temperature. It can last two to three years in the fridge.

Yet, soy sauce will change in color, taste, and smell over time. This doesn’t mean it’s spoiled. But do watch out for mold, strange smells, or odd textures. If you see these, throw the sauce away.

Does Soy Sauce need to be Refrigerated?

Soy sauce’s color, taste or smell may change with age as a result of oxidation but this does not mean that it has gone off or become rancid. Kikkoman claims that refrigeration is not necessary even after opening, but it may improve the flavor.

Knowing how to store soy sauce correctly will keep your food tasting delicious! Whether you’re using it as a marinade, seasoning or dip – good storage methods are essential for saving both money and taste over time.

Signs of Spoiled Soy Sauce

signs of spoiled soy sauce

Firstly and odd or bad smell is the most important sign that soy sauce has gone bad. If it smells sour, fermented or simply unpleasant you should discard it. Furthermore if it appears to be darker in color than usual or has mold growing on, those are clear indicators that it is spoiled and cannot be used anymore.

Another hint that your soy sauce may be spoiled is when its taste goes wrong. Any different from savory or umami tastes especially if they are sour or foul could mean that the product is no longer good for use.

In some cases there might be small particles or sediment present in soy sauce which could indicate spoilage. Although these are not always harmful finding them suggests playing safe by throwing away any cloudy looking strange jar of soy sauce..

Remember, even if soy sauce is past its expiration but still looks and smells ok, it could be fine to eat. Nonetheless, its taste and smell might not be as good. When in doubt about its freshness or safety, it’s smarter to get rid of it.

Proper Storage Guidelines

The shelf life of soy sauce can be extended by several months or even a year beyond its expiry date if stored properly. This is especially true for tamari and Chinese dark sauces which do not lose their flavor under ideal conditions long after they have expired according to the manufacturer’s recommendation.

Unopened soy sauce stays fine indefinitely when stored correctly i.e., at low temperatures away from light and air exposure; storage inside refrigerators can extend usability up between 2-3 years (though might darken due oxidation) hence should be kept in a cool cupboard away from direct sunlight or heaters ..

 

 


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About the author

Sammy recently graduated with a Degree in English literature, she works part time for Kapnos Dining Club, reviewing the latest products both food and drink in the Grocery stores, as well as helping Noel edit and photograph the latest recipes.

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