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.'

Classification

Tags below link to other ingredients sharing the same attribute, so you can pivot from one ingredient to its peers.

Product applications

Functions

Flavoring

Regulatory tags

Culinary ingredient

Origin

Plant-derived

Used in (typical product categories)

Finished-product categories that commonly include this ingredient in Japanese-market formulations.

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

What it is

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.'

Typical uses in Japanese products

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.

Example products

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

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Related ingredients

Junsai (Water Shield)

Used in similar product applications

Other ingredients commonly used in the same finished-product families.

Sharing similar functions

Ingredients that overlap on functional benefit tags.

From the same origin

Other ingredients that share an origin classification.

References

MEXT 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.