Soy Sauce Powder: How Brewed Soy Sauce Becomes a Dry Seasoning

Want soy sauce’s salty, savory taste in a dry rub, a popcorn seasoning or a breadcrumb coating, without the soggy clumps? That’s the job of soy sauce powder: brewed soy sauce spray-dried onto a carrier, typically maltodextrin, into a free-flowing powder. It tastes like soy sauce without the liquid, and that makes it easy to overdo, so add a little at a time and cut back on other salt. If you avoid wheat, Kikkoman makes a gluten-free version with soybeans, salt and spirit vinegar instead.

At a glance

How it is made

It starts with ordinary brewed soy sauce. Kikkoman describes its SN-1 powder as “spray-dried, instant soy sauce powder made from traditionally brewed Kikkoman Soy Sauce,” with maltodextrin “used as carrier in spray-drying process.”³ Its European plant says the same of its whole range: the powder concentrates are spray-dried using maltodextrin.

U.S. regulations define maltodextrin as a nonsweet nutritive saccharide polymer made by partly breaking down corn, potato or rice starch. FDA allows it in food with no limit beyond current good manufacturing practice.¹ The labels on the products we checked don’t say which starch was used.

Not every powder is the same. Kikkoman Europe sells several grades: two with a strong soy sauce taste, one milder, one with less salt, and a gluten-free powder made from soybeans, salt and spirit vinegar instead of wheat.⁴ The regular powders all list soybeans and wheat.

Flavor

A 2025 analysis of soy sauce taste found it’s mainly salty and umami, with smaller parts sour, bitter and sweet.⁵ Kikkoman describes its powder as having a meaty, rich, concentrated soy sauce flavor with a pronounced brewed bouquet.³ It tastes like soy sauce without the liquid, and that makes it easy to overdo. It’s mostly salt and savoriness, so add a little at a time and taste.

Where soy sauce comes from

Soy sauce itself is made from fermented soybeans, wheat, yeast and salt. It descends from jiang, the thick fermented pastes that, in food writer Fuchsia Dunlop’s account, the Chinese have made and eaten for more than 2,000 years.⁶

When the liquid we call soy sauce got its modern name is disputed:

Otsuka also notes that Yiya Yiyi, a cookbook sometimes dated to the 14th century, survives only in an edition from 1597.⁷ We haven’t settled the question, so you get both positions.

In Japan, the word for soy sauce settled early on shoyu. Dunlop writes that the names for soybean in European languages come from that Japanese word, and that the first known Western reference to the sauce is in the journal of the English philosopher John Locke, who in 1679 mentioned a sauce called “Saio” from the East Indies. In 1688 the English navigator William Dampier described coming across it, and Dutch traders shipped Japanese soy sauce to India in the 17th century.⁶ Soy was also one of the original ingredients of Worcestershire sauce, which went on sale in 1837.⁸ See Worcestershire powder.

How to use it

Kikkoman pitches its powder for dry bouillons, soups, sauces and marinades, and for spice mixtures, breadcrumb coatings and glazes. At home it shines wherever liquid soy sauce would make things soggy or clumpy:

• In a dry rub for beef, pork or chicken, with garlic powder, onion powder and pepper.
• In a popcorn or roasted-nut seasoning.
• Whisked into a stir-fry sauce base, or stirred into a soup or gravy, where it dissolves.
• Mixed with water as a quick stand-in for liquid soy sauce. None of the producers we checked gives a ratio, so start with a little powder, taste and adjust.

The powder already has salt in it, so cut back on any other salt in the recipe. For extra savoriness, you can pair it with MSG; see MSG vs salt.

Buying and storage

Look for a short ingredient list. Soy sauce, maltodextrin and salt is typical. If you need to avoid wheat, look for a powder labeled gluten-free; Kikkoman’s is made with soybeans, salt and spirit vinegar instead.⁴ Neither Kikkoman page we checked gives a shelf life or storage conditions. We found no published shelf life anywhere else either, so keep it sealed in a cool, dry place.

Sodium

Soy sauce powder is a salty seasoning. The U.S. Daily Value for sodium is less than 2,300 mg a day,² and WHO recommends that adults eat less than 2,000 mg of sodium a day. WHO names raised blood pressure as the main health effect of diets high in sodium.⁹ Neither Kikkoman page gives a sodium figure for its powders, so check the Nutrition Facts on the package you buy. Kikkoman Europe sells a lower-salt grade.

Related

• Too much soy sauce: how to rescue an over-salted dish
• Worcestershire powder and vinegar powder, two other dried condiments
• Monosodium glutamate, cooking with MSG and MSG substitutes
• Garlic powder and onion powder for rubs