How to Thicken Soy Sauce

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By: Rachae's Nosheri


Soy sauce is an indispensable component of many cuisines, yet its consistency may require alteration before being suitable for dipping or cooking.

Starch or flour are one of the easiest and most cost-effective ways to thicken soy sauce, and here’s how it works: Simply mix your starch/flour mixture with water until there are no clumps, and pour it directly into your simmering soy sauce.


Cornstarch is an easy, cost-effective and versatile thickener that’s used widely in soy sauce production. Not only is it great for soy sauce production, but other ingredients such as flour and brown sugar may also be used to thicken it further.

Cornstarch can be used to thicken soy sauce by mixing it with water and stirring the mixture until smooth, before adding it back into simmering soy sauce while continuing to stir continuously until you achieve your desired thickness. Note that this method takes more time than other thickeners.

Potato and rice starches may also work to thicken soy sauce, though their effects may differ from cornstarch’s. Also keep in mind that cornstarch could lose its effectiveness if exposed to acidic foods, so you should use other types of starches if they are cheaper or have similar properties.

Another way of thickening soy sauce is reducing it, though this method takes more time and will produce stronger-flavored sauce. This approach works especially well when dealing with marinara sauce or barbecue glaze that are slightly too thin.

If you don’t have cornstarch handy, another way of thickening soy sauce with flour may be available. Combine equal parts flour and water in a bowl and stir until everything is uniform before pouring the runny mixture into your soy sauce jars. While this method typically works well, be aware that patience may be required in achieving desired thickness levels for soy sauce.

Thickening soy sauce requires mixing starch with water, then cooking until thickened. However, other thickeners, such as arrowroot or tapioca starch may take longer to dissolve into solution and could create an unpleasant texture if added to acidic foods.


Soy sauce is an extremely useful condiment that can be customized and thickened to make it even more useful in various situations. From using it as a marinade for noodles and chicken to adding extra flavors like garlic and chili flakes for delicious soups – there are so many uses of soy sauce! Plus you can even use it to baste roasts!

There are various techniques for thickening soy sauce, with flour being one of the more popular methods. Flour can be found in almost all kitchens and is an inexpensive method to thicken sauce. Simply mix some flour with water until a slurry forms before stirring into your sauce to thicken up as necessary – though this process takes more time and effort than others, it will definitely pay off!

Create a roux is another effective method to thicken soy sauce. A roux is a mixture of fat and flour that can be used to thicken various dishes, including soy sauce. To use a roux for soy sauce thickening purposes, mix ingredients while at room temperature before regularly stirring your mixture so it does not clump together.

Cornstarch, potato starch and brown sugar are other effective solutions to thicken soy sauce. All three options can be easily found at most grocery stores and can be easily applied – though be mindful that their presence may alter the flavor profile – for instance brown sugar may make your sauce much sweeter than before!

Not only can you use everyday ingredients to reduce soy sauce intake, but you can also try reducing its quantity with this straightforward stovetop method of soy reduction. Bring the uncapped soy sauce to a boil before simmering it until thick enough; this may take some time, but is an effective method of thickening soy sauce and can even help those seeking to cut back their sodium consumption.

Vegetable gum

Soy sauce is an indispensable component for many dishes, yet sometimes its consistency may be too thin to maintain its essential characteristics: flavor, texture and moisture retention. To improve this aspect of cooking with soy sauce, there are various techniques you can use to thicken it – some involve starch or sugar addition while others don’t require additional ingredients at all!

One of the easiest and simplest ways to thicken soy sauce is by mixing starch-water mixture. Flour, cornstarch, or rice starch are often added as thickeners; once this slurry reaches desired thickness it should be stirred slowly into soy sauce to avoid any clumping and removed from heat once desired thickness has been reached.

Brown sugar offers another method for thickening soy sauce, providing an effortless method that requires no additional ingredients – although this option might take slightly more time and produces a distinct taste than commercially produced soy sauces.

Reducing soy sauce can also thicken it. This process involves simmering it on low heat until all the water has evaporated, yielding thicker results than with adding any additional ingredients or for those seeking richer and more concentrated results.

This method may take longer, but can be an effective way of thickening soy sauce and creating something with more flavor than traditional versions. Simply pour your soy sauce into a saucepan and simmer over low heat until you achieve the desired thickness, stirring periodically so it doesn’t burn or stick to the bottom of the pan. Once complete, take it off the heat immediately so it doesn’t over-thicken and ruin its taste; store in your refrigerator until needed again!

Brown sugar

Soy sauce is generally a thin liquid. This holds true whether purchased from stores or made yourself using recipes. But that doesn’t have to mean watery soy sauce; there are multiple methods for thickening soy sauce to achieve the consistency you desire.

One way of thickening soy sauce is simply simmering it until all of the liquid has evaporated, creating a richer version in terms of both flavor and saltiness. Another effective method for thickening soy sauce involves thickening with flour or cornstarch – though this takes time, this method works great.

Add brown sugar to your soy sauce as another way to thicken it and sweeten its taste, providing another thickening option if none exist. It can also make for easier cleanup when making dishes requiring lots of sauce. This method may be especially beneficial if no other thickeners exist.

Reduced soy sauce is another method, whereby it can be heated until it reaches your desired thickness. Be warned though; this process takes time, and requires you to monitor its progress closely so as not to let any scorch-off happen!

Another effective and quick method is adding a mixture of cold water and flour to soy sauce, although this requires additional work. Just ensure it doesn’t boil over, stirring often enough to prevent lumps forming. Experiment with different ways of thickening soy sauce to find what best works for your recipe and yourself!

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Rachae's Nosheri

Rachael’s Nosheri is a Jewish deli located in 120 S. 19th St, Philadelphia, PA 19103. We serve breakfast and lunch comfort foods and deli sandwiches. Our extensive menu and reasonable prices make us a popular destination for locals and visitors alike. Our food is pretty good if you’re in the mood for deli sandwiches, and we’re known for our American, Bagels, Breakfast, Lunch Specials, and Sandwiches.

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