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Bonito soup stock

Bonito soup stock is a Japanese-style savory broth used as a base for soups, sauces, and noodle dishes.

Bonito soup stock — illustrative ingredient image

About Bonito soup stock

Bonito soup stock is a savoury liquid made by steeping dried, smoked bonito flakes in hot water, then straining them out. It is used as a base for soups, sauces, noodle dishes, and simmered foods, adding deep fish flavour without leaving flakes in the finished dish.

The stock is usually clear to lightly coloured, with a clean, smoky, savoury aroma and a concentrated umami character. Freshly brewed stock is lighter and more delicate, while reduced, seasoned, powdered, granulated, or liquid-concentrate versions can taste stronger or saltier.

Fresh stock is served as a strained liquid and may be diluted or combined with other broths. Commercial products appear as powders, granules, or pourable concentrates. Steeping time, dilution, and straining affect its colour, strength, and mouthfeel.

Ingredient type
compound ingredient

Forms & related ingredients

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Where bonito soup stock appears

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

Local names for bonito soup stock

Names and romanised forms to recognise on menus and labels.

English

bonito soup stock

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

Bonito soup stock nutrition & diet

Bonito soup stock nutritional value

Soup stock, "Katsuo-bushi dashi" (stock of "Katsuo-bushi") (cf. 10091 "Katsuo-bushi") — MEXT 17019

Per 100 g of the edible portion in the explicitly named reference form.

Calories
2kcal
Protein
0.4g
Carbs
0.0g
Fat
Trace

Trace: the source reports a very small amount per 100 g, not zero. No exact quantity is available to calculate for a different portion.

Per 100 g edible portion. Values use MEXT 2023 with March 2026 corrections; the English food name is matched by food code from the official English edition. Carbohydrate is total carbohydrate by difference. Values in parentheses in the source are estimates reported by MEXT. This reference does not cover other preparations or brands.

Portions & preparation

Treat bonito soup stock as a prepared liquid, not as plain bonito flesh. Establish whether it is made from dried, smoked, or fermented bonito and whether seaweed, salt, sugar, vegetables, or other ingredients remain in the broth. A cup used as a base differs from concentrated seasoning or a finished soup.

Compare the right form: Reference should match the brand or recipe, preparation concentration, straining status, and whether bonito solids, seaweed, salt, or other ingredients remain.

Diet considerations

Bonito stock is animal-derived when bonito is present, though the recipe may include plant ingredients or additional animal products. Compatibility changes with fish, meat, dairy, or cereal additions. Plain stock differs from noodle soup, rice dishes, flour-thickened sauces, or broths containing substantial solids and accompanying carbohydrates.

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

Dietary compatibility

  • Vegan
    Typically incompatible
  • Vegetarian
    Typically incompatible
  • Pescatarian
    May be compatible
  • Keto
    Not established
  • Paleo
    Not established
  • Low-carb
    Not established
  • Halal
    Not established
  • Kosher
    Not established
What these diet assessments mean
Vegan · Typically incompatible
The ingredient profile identifies an animal-derived food or derivative.
Vegetarian · Typically incompatible
The profile identifies animal flesh, seafood or a derivative excluded by a vegetarian diet.
Pescatarian · May be compatible
The recorded ingredients may fit this pattern. This is not a complete recipe or manufacturing specification; check additions and preparation.
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: MEXT Standard Tables of Food Composition in Japan, 2023 supplement, corrected March 2026 ↗. 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: .