Food · Fermented foods
Agemaki (Jackknife Clam)
あげまき (Agemaki)
Also known as: Agemaki, Jackknife clam, Sinonovacula constricta, 揚巻, アゲマキ, Mategai (related)
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| Category | Food |
|---|---|
| Japanese labeling name | あげまき |
| Common Japanese notations | あげまき, 揚巻, アゲマキ |
| Origin | Jackknife clam (Sinonovacula constricta); native to Ariake Sea (Saga, Fukuoka) — **once iconic Ariake-Sea specialty but population dramatically declined since 1980s; domestic native agemaki is now extreme-rarity**; modern retail agemaki is essentially 100% imported from China and Korea (where it remains commonly cultivated as 蛏子/맛조개); long-shaped shellfish with distinctive sliding burrowing behavior |
| Typical functions | Sake-mushi (sake-steamed) preparation, Mariné salad, Stir-fry with garlic-butter, Niche specialty foodservice |
| Regulatory status in Japan | Standard food labeling. **Origin disclosure (overwhelmingly imported).** **Mollusk JAS-recommended-disclosure allergen.** |
Agemaki (あげまき / 揚巻) is the jackknife clam (Sinonovacula constricta) — once iconic Ariake-Sea (Saga) specialty but native population dramatically declined since 1980s. Modern retail is essentially 100% Chinese/Korean import.
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 agemaki retail (general supply, Chinese/Korean)
- Frozen agemaki B2B foodservice
What it is
Sinonovacula constricta jackknife clam (essentially imported).
Typical uses in Japanese products
Sake-mushi sake-steamed.
Mariné salad.
Garlic-butter stir-fry.
Niche specialty foodservice.
For OEM: imported retail, frozen B2B.
Regulatory classification in Japan
Standard food labeling. **Origin disclosure (overwhelmingly imported).** **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 (蛏子). |
| Korea | Established as 맛조개 (matjogae). |
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 — あげまき
Last updated: 2026-04-28. Ingredient entries are reviewed at least annually against current regulatory listings.