Food · Fermented foods
Chōsen-Hamaguri (Korean Hard Clam)
ちょうせんはまぐり (Chōsen-hamaguri)
Also known as: Chōsen-hamaguri, Korean hard clam, Meretrix petechialis, Meretrix lamarckii, 朝鮮蛤, チョウセンハマグリ
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| Category | Food |
|---|---|
| Japanese labeling name | ちょうせんはまぐり |
| Common Japanese notations | ちょうせんはまぐり, 朝鮮蛤, チョウセンハマグリ |
| Origin | Korean hard clam (Meretrix petechialis / lamarckii); related to native Japanese hamaguri (Meretrix lusoria) but distinct species; native to East China Sea, Yellow Sea — naturalized in Kyushu (Saga, Kumamoto) coastal areas; **major component of 'imported hamaguri' supply replacing declining native Japanese hamaguri**; less expensive than native Japanese hamaguri |
| Typical functions | General-supply 'hamaguri' substitute (where origin labeling permits), Sake-mushi sake-steamed, Yaki-hamaguri grilled, Foodservice clam-supply (general tier) |
| Regulatory status in Japan | Standard food labeling. **Origin disclosure required — distinguishing chōsen-hamaguri (M. petechialis) from native Japanese hamaguri (M. lusoria) is mandatory.** **Mollusk JAS-recommended-disclosure allergen.** |
Chōsen-hamaguri (ちょうせんはまぐり / 朝鮮蛤) — Korean hard clam (Meretrix petechialis) — is a related but distinct species from native Japanese hamaguri. Major component of imported hamaguri supply replacing declining native. Less expensive than native.
Classification
Tags below link to other ingredients sharing the same attribute, so you can pivot from one ingredient to its peers.
Product applications
Functions
Regulatory tags
Origin
Used in (typical product categories)
Finished-product categories that commonly include this ingredient in Japanese-market formulations.
- Imported chōsen-hamaguri retail (general supply)
- Frozen chōsen-hamaguri B2B foodservice
What it is
Meretrix petechialis / lamarckii Korean hard clam (distinct from native M. lusoria).
Typical uses in Japanese products
General-supply 'hamaguri' substitute.
Sake-mushi sake-steamed.
Yaki-hamaguri grilled.
Foodservice clam-supply.
For OEM: imported retail, frozen B2B foodservice.
Regulatory classification in Japan
Standard food labeling.
**Native Japanese hamaguri (M. lusoria) vs chōsen-hamaguri (M. petechialis) origin disclosure mandatory.**
**Mollusk JAS-recommended-disclosure allergen.**
Regulatory classification in other markets
| EU | **Mollusks EU-mandatory allergen.** Niche specialty. |
|---|---|
| USA | Mollusk allergen disclosure. Niche specialty. |
| China | Native and major aquaculture origin. |
| Korea | Established as 백합 (baekhap). |
Example products
Example finished products will be added after verification.
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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 — ちょうせんはまぐり
Last updated: 2026-04-28. Ingredient entries are reviewed at least annually against current regulatory listings.