Miso paste can fit keto only in small amounts: ~20g net carbs per 100g (about ~1–2g net per teaspoon). Use measured teaspoons to add deep umami without overshooting carbs.
Is Miso Paste Keto?
Asian Sauces

KETO VERDICTLIMIT
Miso paste can fit keto only in small amounts: ~20g net carbs per 100g (about ~1–2g net per teaspoon). Use measured teaspoons to add deep umami without overshooting carbs.
- Net carbs (100g)20g
- Protein (100g)12g
- Fat (100g)6g
- Keto verdictLimit portions
NUTRITION FACTS
Per 100g (raw)
Net Carbs
20g
Total Carbs
26g
Fiber
6g
Protein
12g
Fat
6g
Calories
199
Source: USDA FoodData Central
WHY TO LIMIT IT ON KETO
- Concentrated umami: a teaspoon goes a long way, keeping absolute carbs low
- Easy to dilute into broths/sauces for flavor with minimal quantity
- Pairs well with low-carb bases (cauliflower rice, shirataki noodles)
- Label-savvy choices (no added sugar) help minimize carb impact
- Works as a finishing ingredient—stir in off-heat to use less
- Naturally complements high-fat ingredients (butter, sesame oil) for better keto ratios
HEALTH BENEFITS
- Fermented soy may provide beneficial microbes (if unpasteurized and not boiled)
- Good source of protein and essential minerals like manganese and copper
- Naturally rich in glutamates for savory satisfaction, aiding dietary adherence
- May offer B vitamins from fermentation
- Sodium can support electrolytes on keto (use mindfully)
- Pairs with seaweeds/stock to create mineral-rich, hydrating soups
PREPARATION SUGGESTIONS
SMALL SOUPS
Whisk 1–2 tsp into hot bone-broth or dashi; add tofu substitutes or low-carb veggies. Stir off-heat to preserve live cultures.
MISO BUTTER
Mash miso with butter and garlic; melt over salmon, steak, or portobello-mushroom.
GLAZE & MARINADE
Blend 1 tsp miso with sesame-oil, soy-sauce-low-sodium or tamari, ginger, and vinegar-apple-cider; brush on chicken-thighs or salmon.
DRESSING
Shake miso with olive-oil, lemon, and a touch of tahini for a creamy salad dressing.
STIR-FRY FINISH
Dilute 1 tsp in a little water and toss through shirataki-noodles or cauliflower-rice right before serving.