KETO VERDICTYES
Keto-friendly in small amounts. It’s ~4g net carbs per 100g (about 0.6g per tablespoon ~15g), so a splash barely registers. Intense umami means a little goes a long way—great for keto stir-fries, marinades, and dressings.
Is Soy Sauce Keto?
Asian Sauces
Keto-friendly in small amounts. It’s ~4g net carbs per 100g (about 0.6g per tablespoon ~15g), so a splash barely registers. Intense umami means a little goes a long way—great for keto stir-fries, marinades, and dressings.
- Net carbs (100g)4.1g
- Protein (100g)8g
- Fat (100g)0g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100g (raw)
Net Carbs
4.1g
Total Carbs
4.9g
Fiber
0.8g
Protein
8g
Fat
0g
Calories
53
Source: USDA FoodData Central
WHY IT'S KETO-FRIENDLY
- Potent flavor = very small serving sizes (~1 tsp–1 tbsp), keeping carbs low
- Per 100g ~4g net carbs, but typical use is a fraction of that
- Choose sugar-free, traditionally brewed options; avoid sweetened blends
- Tamari is a good gluten-free alternative; coconut aminos are sweeter and higher carb—use sparingly
- Track macros if sauces/marinades add up
HEALTH BENEFITS
- Rich umami peptides can boost meal satisfaction
- Traditional fermentation yields bioactive compounds (not a probiotic after pasteurization)
- Adds depth to protein- and fat-forward keto meals, improving dietary adherence
- Trace minerals present, but sodium dominates—use mindfully
PREPARATION SUGGESTIONS
BASIC USAGE
Splash into stir-fries, scrambled eggs, or sautéed greens for instant umami.
FLAVOR ENHANCEMENT
Whisk with sesame-oil, grated ginger, and garlic for a quick finishing sauce.
MARINADE BASE
Combine with olive-oil, vinegar-apple-cider, and chili for steak or salmon marinades.
DIPPING SAUCE
Mix with wasabi or a little mayo-avocado for a creamy, low-carb dip.
SEASONING AGENT
Add a teaspoon to broths and pan sauces to round out saltiness with umami.
FINISHING TOUCH
Drizzle lightly over shirataki-noodles or zucchini-noodles just before serving.
WHERE TO BUY
As an Amazon Associate, KetoLens earns from qualifying purchases. We only recommend products we've researched — recommendations never affect our keto verdicts.
Kikkoman Naturally Brewed Soy Sauce, 15 oz
Kikkoman's traditionally brewed soy sauce contains just 1g net carb per tablespoon with no added sugar or starch thickeners, making it a trusted, widely-recommended keto pantry staple versus sweetened or "seasoning sauce" imitations.
San-J Gluten Free Tamari Soy Sauce, 10 oz
San-J's tamari is specially brewed from 100% soy with no wheat, so it swaps out Kikkoman's traditional wheat-containing formula for a certified gluten-free option while keeping carbs negligible (roughly 1g net carb per tablespoon) and delivering a bolder, more concentrated umami than typical soy sauce.
San-J Organic Gluten Free Tamari Soy Sauce, 10 oz
For shoppers who want organic certification alongside a wheat-free brew, San-J's Organic Tamari is made from 100% whole soybeans with no wheat and carries USDA Organic certification, offering the same near-zero-carb profile as Kikkoman's classic soy sauce but with a cleaner, more traceable ingredient pedigree.