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Natto

Sticky fermented soybeans eaten at Japanese breakfast.

Natto — illustrative ingredient image

About Natto

Natto is a Japanese preparation of fermented soybeans, commonly eaten at breakfast. It is a ready-to-eat food rather than a fresh soybean ingredient, and is often served with rice, mustard, soy-based seasoning, or chopped scallions.

The beans are soft and moist, with a distinctly sticky coating that forms threads when stirred. Its flavour is savoury, nutty, and fermented, while the aroma can be strong and earthy. Products vary in bean size, firmness, fermentation intensity, and the amount of seasoning included.

Natto is usually sold in small chilled portions, often as separate packs of fermented beans with accompanying seasonings. It may be stirred before serving to develop its characteristic threads. It is generally eaten as supplied, though it can also be folded into rice, noodles, omelettes, or other dishes.

Ingredient type
compound ingredient

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Where natto appears

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Name examples awaiting language review. Confirm the specific food or product.

Local names for natto

Names and romanised forms to recognise on menus and labels.

English

natto

Available names only. Languages may be spoken in other countries; a name alone does not identify every ingredient in a dish.

Natto nutrition & diet

Natto nutritional value

Natto — USDA SR Legacy reference

Per 100 g of the edible food form in the USDA reference.

Calories
211kcal
Protein
19.4g
Carbs
12.7g
Fat
11.0g

Reference values for the named food, not a seasoned dish or a different commercial blend. Compare the ingredient list and preparation.

Portions & preparation

Match natto made from fermented soybeans and identify whether the reference includes the supplied sauce, mustard, or other packet contents. Use the edible soybean portion separately from rice, noodles, vegetables, or toppings. Stirring changes texture but does not define a different ingredient unless additions are mixed in.

Compare the right form: Reference must match plain fermented natto soybeans or the exact packaged preparation, including sauce or mustard, and the edible portion.

Diet considerations

Natto is a fermented soybean food of plant origin. Compatibility changes when packets contain sauces or when it is served with egg, fish, meat, dairy, or other animal additions. Rice, noodles, cereal toppings, and sweetened sauces introduce different portion-dependent carbohydrate patterns; brand recipes require review.

AI-authored reading notes · Awaiting editorial review. Measured values, where available, have a separate source above.

Dietary compatibility

  • Vegan
    Not established
  • Vegetarian
    Not established
  • Pescatarian
    Not established
  • Keto
    Not established
  • Paleo
    Not established
  • Low-carb
    Not established
  • Halal
    Not established
  • Kosher
    Not established
What these diet assessments mean
Vegan · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Vegetarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Pescatarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Keto · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Paleo · Not established
The ingredient form and processing have not been assessed against this dietary pattern.
Low-carb · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Halal · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish halal status.
Kosher · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish kosher status.

For the plain ingredient · Awaiting review. Diet compatibility is not allergy suitability or halal/kosher certification. Keto and low-carb depend on the portion.

Reviewed ingredient entryIngredient reference · Preparations vary

AI-generated illustration for visual context. It does not identify a particular product or establish allergen content.

Sources & review

Nutrition reference: USDA FoodData Central — Natto ↗. Values are scaled from 100 g of the recorded edible form. Individual portions have no assumed fixed weight.

Expanded overview, name examples and nutrition notes are database drafts awaiting editorial review. Numeric nutrition values, where shown, have their own source and food-form reference.

The ingredient description and dish connections come from the draft catalogue and may change after review.

Last recorded verification: .