Low-Salt Soy Sauce Substitute You Can Make at Home

This low-salt soy sauce substitute is a quick, savory seasoning made by simmering unsalted broth with vinegar, molasses, and warm spices. It brings color and a balanced salty-sour-sweet flavor to stir-fries, marinades, and dipping sauces, though it will taste milder and less fermented than soy sauce.

Ingredients

1 cup (240 ml) unsalted beef broth, or unsalted vegetable or mushroom broth
1 tablespoon (15 ml; about 21 g) molasses
1 tablespoon (15 ml) balsamic vinegar
1 teaspoon (5 ml) rice vinegar
1 teaspoon (5 ml) toasted sesame oil, optional
1/2 teaspoon (about 1.5 g) garlic powder
1/4 teaspoon (about 0.5 g) ground ginger
1/8 teaspoon (about 0.3 g) ground black pepper

Instructions

Measure the broth, molasses, balsamic vinegar, rice vinegar, garlic powder, ginger, and black pepper into a small saucepan. If using sesame oil, add it now. Whisk until the molasses is dispersed; it can settle in a thick streak at the bottom if you do not mix it in well.
Set the pan over medium heat and bring the mixture just to a gentle simmer, stirring once or twice. Lower the heat as needed so it bubbles lightly rather than boiling hard. Simmer uncovered for 5 minutes. This brief simmer blends the flavors and takes the raw edge off the garlic powder; the mixture will remain pourable rather than reducing to a thick glaze.
Remove the pan from the heat and taste a small spoonful after it cools slightly. If you want more tang, stir in a few drops of rice vinegar. If you prefer a rounder, sweeter note, add molasses 1/4 teaspoon (about 1 g) at a time. Let it cool before pouring into a clean jar or using it in a cold dip. The recipe makes about 1 cup (240 ml), or eight 2-tablespoon portions; the precise yield can vary slightly with simmering and pan size.

Tips

Start with genuinely unsalted broth. “Reduced sodium” broth may still contain a noticeable amount of salt, and brands vary. Check the ingredient list and nutrition label, including the label on homemade stock if you did not make it without salt. This recipe has no added salt, but its final sodium level depends on the broth and any other packaged ingredients you use.
Keep the simmer gentle. A rolling boil can reduce the liquid too quickly and make the vinegar taste sharp. A small saucepan and low, steady bubbles are enough; the goal is to blend the ingredients, not concentrate them into a syrup. If the finished mixture tastes too intense, stir in a tablespoon of unsalted broth or water.
Adjust in small increments. Molasses, balsamic vinegar, and broth differ in sweetness, acidity, and depth. Taste before adding more of any one ingredient, and wait a moment after each adjustment. Adding several spoonfuls at once can push the balance toward sweet or sour instead of making it more soy-like.
Check labels for dietary needs. Broth can contain soy, wheat, or added salt even when the front label emphasizes another feature. Choose ingredients that suit the person eating, and remember that this seasoning is not a precise match for soy sauce in color, flavor, or sodium content.

Serving Suggestions

Use this seasoning as a starting point anywhere a recipe calls for soy sauce. For a stir-fry, add a tablespoon or two near the end of cooking and toss until the sauce lightly coats the vegetables, tofu, noodles, or meat. Because it is broth-based and less concentrated than soy sauce, it may not season a large pan as strongly; taste the finished dish before adding another splash. A squeeze of lime or a little rice vinegar can brighten a vegetable-heavy stir-fry, while a spoonful of water helps distribute the sauce without making it too intense.

For a quick dipping sauce, combine 2 tablespoons (30 ml) of the substitute with 1 teaspoon (5 ml) rice vinegar and, if desired, a few drops of sesame oil. Serve it with dumplings, spring rolls, or sliced vegetables. For a marinade, whisk it with a little oil and aromatics such as grated ginger or garlic, then refrigerate the food while it marinates. Since this blend contains less salt and has a gentler flavor than regular soy sauce, do not assume it will season or preserve food in exactly the same way as a soy-based marinade.

It also works in fried rice, noodle bowls, soups, and pan sauces. Stir a little into a soup near the end rather than adding a large pour at the start, when it can be harder to judge the final seasoning. In a pan sauce, add it after cooking the main ingredients and loosen browned bits with broth or water. For recipes where soy sauce is the main flavor, such as a simple dipping sauce, expect a noticeably different result and adjust the other seasonings to suit.

Variations

Make it vegetarian: Use unsalted vegetable broth or mushroom broth instead of beef broth. Mushroom broth gives the mixture a deeper, earthier savoriness; a lighter vegetable broth makes a milder, less robust substitute. If the broth tastes sweet or strongly herbed on its own, that flavor will carry into the finished sauce.

Add more mushroom depth: Whisk in 1 teaspoon (about 3 g) of dried mushroom powder before simmering, or steep a small dried shiitake in the broth and remove it before serving. Mushroom powder can be hard to find; leaving it out is fine, though the result will have less earthy umami. Check the package for salt or other seasonings, since some powders are blends rather than plain dried mushrooms.

Use a different sweetener: Dark brown sugar can replace the molasses in the same amount, but it gives a cleaner, less bittersweet sweetness and a lighter color. Maple syrup also works, though it adds a distinct maple aroma. If either replacement makes the sauce seem too sweet, add vinegar a few drops at a time rather than increasing the broth and diluting all the flavor.

Make it gluten-free or soy-free when needed: The listed ingredients can be selected to avoid wheat or soy, but the broth and flavorings must be checked individually for cross-contact and added ingredients. Use a broth labeled for your needs and omit sesame oil if sesame is also a concern. This recipe does not ferment and will not reproduce the characteristic fermented flavor of traditional soy sauce; it is a convenient seasoning alternative, not a fermented sauce.

Storage and Reheating

Let the sauce cool, transfer it to a clean, covered container, and refrigerate it within 2 hours of cooking. Keep it refrigerated and use it within 4 days for best flavor. The broth may settle or form a light layer as it chills, especially if the broth contains natural gelatin; stir or shake the container before measuring. Do not leave the sauce at room temperature for extended storage, and do not treat it as shelf-stable or use home canning methods.

To warm a portion, heat it in a small saucepan over low heat or microwave it briefly in a microwave-safe cup, stirring and checking often. Warm only what you need, and avoid repeatedly heating and cooling the whole batch. If using the sauce in a cooked dish, add it directly to that dish and heat the dish as directed. Discard the sauce if it has been left out longer than 2 hours or shows an unusual smell, appearance, or texture.

For longer storage, freeze small portions in a freezer-safe container, leaving a little room for expansion, for up to 2 months for best quality. Thaw a portion in the refrigerator and stir before use. Freezing may slightly change the texture, but that is usually unnoticeable once the sauce is whisked into a hot dish. Avoid freezing it in a glass container unless it is specifically designed for freezer use.

Frequently Asked Questions

Can I use this in the same amount as soy sauce?
Start with the same amount called for in a recipe, then taste and adjust. This substitute is broth-based and less concentrated, so a dish may need a little more for a similar level of savory flavor. Add it gradually, particularly in soups, marinades, and dipping sauces, where extra liquid can affect the finished consistency.

Does this taste exactly like soy sauce?
No. Soy sauce develops its distinctive fermented, deeply savory flavor through a process this quick recipe does not use. Molasses and balsamic vinegar supply color and complexity, while broth contributes savoriness, but the result is milder and slightly sweeter. It works best as a practical seasoning stand-in in mixed dishes rather than as an exact replacement in recipes where soy sauce is the central flavor.

Can I make it without sesame oil?
Yes. Sesame oil is optional and adds a toasted aroma, but the sauce is still usable without it. Leave it out for a more neutral flavor, or add a small amount of another cooking oil only if you want extra richness. Plain oil will not provide sesame’s distinctive aroma, so it is also perfectly reasonable to omit the oil altogether.

What can I use instead of molasses?
Use the same amount of dark brown sugar, or try maple syrup for a sweeter, more aromatic result. Each alternative changes the flavor slightly: brown sugar is less bittersweet, while maple has its own recognizable note. Add the replacement before simmering, then taste the sauce and adjust with a few drops of vinegar if it needs more balance.

Can I make a larger batch?
Yes, multiply each ingredient by the same amount and use a saucepan large enough to prevent splashing. The simmer may take a little longer to reach a gentle bubbling point, but you do not need to reduce the mixture. Keep the simmer gentle and use the same total simmer time once it is bubbling; make sure the spices and molasses are evenly whisked through the larger batch.

Is this a good replacement for soy sauce in baking or long marinades?
It can work in some marinades, but account for the added liquid and the gentler flavor. For a recipe that depends on soy sauce’s concentrated seasoning, the substitution may produce a different result, and a long marinade will not make this broth-based blend behave like soy sauce. Keep marinating food covered in the refrigerator, and use the recipe’s cooking instructions for the food itself.

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