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.
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Classification
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Product applications
Functions
Regulatory tags
Origin
Common OEM product categories
Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.
- Imported chōsen-hamaguri retail (general supply)
- Frozen chōsen-hamaguri B2B foodservice
Ingredient profile
Meretrix petechialis / lamarckii Korean hard clam (distinct from native M. lusoria).
OEM applications
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). |
Market reference formulations
Example finished products will be added after verification.
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Quick answers
- What is Chōsen-Hamaguri (Korean Hard Clam)?
- 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.
- What is the regulatory status of Chōsen-Hamaguri (Korean Hard Clam) 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.**
- What products typically use Chōsen-Hamaguri (Korean Hard Clam)?
- Imported chōsen-hamaguri retail (general supply) / Frozen chōsen-hamaguri B2B foodservice
- Where does Chōsen-Hamaguri (Korean Hard Clam) come from?
- 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
- What is the INCI / JSCI labeling name for Chōsen-Hamaguri (Korean Hard Clam)?
- JSCI: ちょうせんはまぐり
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References
- 文部科学省 (Ministry of Education, Culture, Sports, Science and Technology) 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.