Food · Fermented foods

Tonburi (Belvedere Seeds / 'Land Caviar')

とんぶり (Tonburi)

Also known as: Tonburi, Land caviar, Belvedere seeds, Bassia scoparia seeds (formerly Kochia scoparia), とんぶり, Hata-tagi-no-mi

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At a glance

Category	Food
Japanese labeling name	とんぶり
Common Japanese notations	とんぶり, トンブリ, 畑のキャビア
Origin	Cooked seeds of Bassia scoparia (broom plant); principal modern production region Akita Prefecture (Hiraka area, GI-protected as 'Hiraka-no-tonburi'); the seeds resemble caviar in size, color (deep black-green), and texture, giving the marketing name 'land caviar' (畑のキャビア)
Typical functions	Premium kaiseki specialty — 'land caviar' positioning, Topping for tororo, sashimi, izakaya appetizers, Akita regional gift retail
Regulatory status in Japan	Standard agricultural product labeling. GI 'Hiraka-no-tonburi' (Akita) protected designation. Not a designated allergen.

Tonburi (とんぶり) — cooked seeds of Bassia scoparia (broom plant) — is a distinctive Akita regional specialty often marketed as 'land caviar' (畑のキャビア) for its visual resemblance to fish caviar (small, dark, glossy, slightly bursting texture). The OEM positioning is exclusively premium specialty: as a kaiseki and traditional Japanese cuisine garnish, as a topping for tororo, sashimi, and izakaya appetizers, and as a Hiraka regional GI-protected premium gift category. Akita Prefecture (Hiraka area) is the dominant production region, GI-protected as 'Hiraka-no-tonburi.'

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Classification

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Product applications

Functions

Flavoring486

Regulatory tags

Culinary ingredient512

Origin

Plant-derived319

Common OEM product categories

Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.

Pre-cooked tonburi retail (jar, vacuum-pack)
Hiraka-no-tonburi GI premium gift retail

Ingredient profile

Tonburi is the cooked seeds of Bassia scoparia (broom plant). The seeds are small (1-2mm), dark green-black, with slightly bursting caviar-like texture. The visual resemblance to fish caviar is the basis for the marketing name.

Production: Akita Prefecture Hiraka area is GI-protected as 'Hiraka-no-tonburi.'

OEM applications

Premium kaiseki garnish — 'land caviar' positioning.

Topping for tororo, sashimi, sunomono.

Izakaya appetizer with grated radish or yamaimo.

For OEM: pre-cooked tonburi retail (Hiraka-no-tonburi GI premium positioning), Akita regional gift retail.

Regulatory classification in Japan

Standard food labeling. GI 'Hiraka-no-tonburi' (Akita) protected. Not a designated allergen.

Regulatory classification in other markets

EU	Niche specialty positioning.
USA	Niche specialty in Japanese-cuisine channels.
China	Niche specialty positioning.
Korea	Niche specialty positioning.

Market reference formulations

Example finished products will be added after verification of Hiraka GI origin.

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Alternative ingredients

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Junsai (Water Shield)

Quick answers

What is Tonburi (Belvedere Seeds / 'Land Caviar')?: Tonburi (とんぶり) — cooked seeds of Bassia scoparia (broom plant) — is a distinctive Akita regional specialty often marketed as 'land caviar' (畑のキャビア) for its visual resemblance to fish caviar (small, dark, glossy, slightly bursting texture). The OEM positioning is exclusively premium specialty: as a kaiseki and traditional Japanese cuisine garnish, as a topping for tororo, sashimi, and izakaya appetizers, and as a Hiraka regional GI-protected premium gift category. Akita Prefecture (Hiraka area) is the dominant production region, GI-protected as 'Hiraka-no-tonburi.'
What is the regulatory status of Tonburi (Belvedere Seeds / 'Land Caviar') in Japan?: Standard agricultural product labeling. GI 'Hiraka-no-tonburi' (Akita) protected designation. Not a designated allergen.
What products typically use Tonburi (Belvedere Seeds / 'Land Caviar')?: Pre-cooked tonburi retail (jar, vacuum-pack) / Hiraka-no-tonburi GI premium gift retail
Where does Tonburi (Belvedere Seeds / 'Land Caviar') come from?: Cooked seeds of Bassia scoparia (broom plant); principal modern production region Akita Prefecture (Hiraka area, GI-protected as 'Hiraka-no-tonburi'); the seeds resemble caviar in size, color (deep black-green), and texture, giving the marketing name 'land caviar' (畑のキャビア)
What is the INCI / JSCI labeling name for Tonburi (Belvedere Seeds / 'Land Caviar')?: JSCI: とんぶり

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References

文部科学省 (Ministry of Education, Culture, Sports, Science and Technology) Standard Tables of Food Composition — とんぶり
Akita Hiraka-no-tonburi GI documentation

Last updated: 2026-04-28. Ingredient entries are reviewed at least annually against current regulatory listings.