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Soup, miso or tofu

Common food

Keto-friendlyLow calorieLow fatLow sugar
Soup, miso or tofu

Photo: Wikipedia

Miso soup is a savory, cloudy Japanese broth made from fermented soybean paste (miso) dissolved in dashi stock, often containing small cubes of silken tofu and seaweed. It has a deeply umami, salty, and slightly sweet flavor with a light, watery texture punctuated by soft tofu. Nutritionally, it's a low-calorie, plant-based source of protein and probiotics from fermentation.

= 100 g
24.0 kcal
Calories
2.2 g
Protein
2.3 g
Carbs
0.85 g
Fat
0.60 g
Fiber
0.77 g
Sugar

Calorie split: 34% protein · 36% carbs · 30% fat

↓ Full nutrition

💚 Why it's loved

People love it for its comforting, umami-rich warmth that serves as a perfect starter or light meal, and its deep roots in Japanese cuisine and culture, symbolizing simplicity and nourishment.

⚠️ Watch-outs & how to enjoy it better

It can be high in sodium, which may be a concern for those with high blood pressure, and miso contains soy, a common allergen. To counteract, use low-sodium miso, add extra water to dilute, and pair it with unsalted sides like plain rice or steamed vegetables.

Key benefits

🍽️ Popular dishes

🌍 Where it's eaten

💡 Did you know?

Traditional miso soup is never boiled after adding the miso paste, as high heat kills the beneficial probiotics and alters the delicate flavor.

Nutrition Facts
Amount Per 100 g
Calories24
% Daily Value*
Total Fat 0.85g1%
Saturated Fat 0.15g1%
Trans Fat —
Cholesterol 1.0mg0%
Sodium 467mg20%
Total Carbohydrate 2.3g1%
Dietary Fiber 0.60g2%
Total Sugars 0.77g
Protein 2.2g
Vitamin D 0.00mcg0%
Calcium 25.0mg2%
Iron 0.47mg3%
Potassium 77.0mg2%
* The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Full nutrition (USDA data · scales with serving)

Water93.1 g
Energy24.0 kcal
Protein2.2 g
Total lipid (fat)0.85 g
Carbohydrate, by difference2.3 g
Fiber, total dietary0.60 g
Total Sugars0.77 g
Calcium, Ca25.0 mg
Iron, Fe0.47 mg
Magnesium, Mg8.0 mg
Phosphorus, P27.0 mg
Potassium, K77.0 mg
Sodium, Na467 mg
Zinc, Zn0.26 mg
Copper, Cu0.05 mg
Selenium, Se1.7 ug
Vitamin C, total ascorbic acid1.9 mg
Thiamin0.02 mg
Riboflavin0.05 mg
Niacin0.53 mg
Vitamin B-60.03 mg
Folate, total12.0 ug
Folic acid0.00 ug
Folate, food12.0 ug
Folate, DFE12.0 ug
Choline, total8.4 mg
Vitamin B-120.04 ug
Vitamin B-12, added0.00 ug
Vitamin A, RAE5.0 ug
Retinol0.00 ug
Carotene, beta63.0 ug
Carotene, alpha0.00 ug
Cryptoxanthin, beta0.00 ug
Lycopene0.00 ug
Lutein + zeaxanthin114 ug
Vitamin E (alpha-tocopherol)0.07 mg
Vitamin E, added0.00 mg
Vitamin D (D2 + D3)0.00 ug
Vitamin K (phylloquinone)22.4 ug
Alcohol, ethyl0.00 g
Caffeine0.00 mg
Theobromine0.00 mg

Fat & fatty acid profile (per 100g)

Fatty acids, total saturated0.15 g
SFA 4:00.00 g
SFA 6:00.00 g
SFA 8:00.00 g
SFA 10:00.00 g
SFA 12:00.00 g
SFA 14:00.01 g
SFA 16:00.10 g
SFA 18:00.04 g
Fatty acids, total monounsaturated0.18 g
MUFA 16:10.01 g
MUFA 18:10.17 g
MUFA 20:10.00 g
MUFA 22:10.00 g
Fatty acids, total polyunsaturated0.37 g
PUFA 18:20.32 g
PUFA 18:30.04 g
PUFA 18:40.00 g
PUFA 20:40.00 g
PUFA 20:5 n-3 (EPA)0.00 g
PUFA 22:5 n-3 (DPA)0.00 g
PUFA 22:6 n-3 (DHA)0.00 g
Cholesterol1.0 mg

Amino acid profile (per 100g)

Estimated from Restaurant, Latino, black bean soup — USDA does not publish this profile for Soup.

Tryptophan0.04 g
Threonine0.17 g
Isoleucine0.16 g
Leucine0.32 g
Lysine0.27 g
Methionine0.10 g
Cystine0.04 g
Phenylalanine0.16 g
Tyrosine0.13 g
Valine0.20 g
Arginine0.35 g
Histidine0.09 g
Alanine0.35 g
Aspartic acid0.38 g
Glutamic acid0.72 g
Glycine0.58 g
Proline0.36 g
Serine0.20 g

FAQ

Is miso soup vegan?
It can be, but traditional dashi stock often contains bonito (fish flakes). For a vegan version, use kombu (kelp) and shiitake mushroom dashi.

Can I reheat miso soup?
Yes, but gently. Avoid boiling it, especially after adding fresh miso paste, to preserve its probiotic benefits and nuanced flavor.

What is the white stuff in miso soup?
The cloudy white substance is the miso paste itself, which is a fermented mixture of soybeans, salt, and a koji culture (usually from rice or barley).

Nutrient density (calculated · NRF9.3)

0
Low nutrient density
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.

NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.

Weight-loss friendliness (composite index)

72
Good for weight loss
Energy density 0.24 kcal/g · 37% calories from protein · 0.6 g fiber · 0.8 g sugar per 100 g.

Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.

Dietary load (calculated from USDA values)

-0.1
Alkaline-forming — PRAL -0.1 mEq / 100 g
Potential renal acid load. Positive = acid-forming, negative = alkaline-forming.

Sodium-to-potassium ratio: 6.06 (lower is better — aim for ≤ 1)

Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.

Related foods

Miso198 kcalMiso sauce429 kcalTofu, firm, prepared with calcium sulfate and magnesium chloride (nigari)78 kcal