Hidaka Kombu (Mitsuishi Kombu)
日高昆布 / 三石昆布 (Hidaka Kombu / Mitsuishi Kombu)
Why source from Japan
Hidaka coast supplies more kombu by volume than any other Japanese origin; familiar to Japanese consumers and the export-restaurant supply chain.
Key spec
Glutamate 1.0–2.0% dry weight; softer texture cooks tender; iodine 150–400 mg/100g.
Typical end-product
Everyday dashi, kombu-stewed dishes (tsukudani), Japanese-restaurant supply export.
At a glance
- Suppliers listed
- 3 suppliers
- Typical MOQ
- 10–100 kg dried; 5–25 kg processed cuts
- Typical lead time
- 6–10 weeks
- Regions of origin
- Hokkaido (Hidaka coast — Mitsuishi, Erimo)
- Category
- Marine functional ingredients
- Harvest season
- July – September; drying through October
- Japan regulatory status
- Food product; iodine disclosure under Japan rules
- INCI name
- Saccharina Angustata Extract
- Japanese name
- 日高昆布 / 三石昆布
- Romaji
- Hidaka Kombu / Mitsuishi Kombu
About this ingredient
The mid-tier kombu of choice for everyday Japanese cooking and the most common kombu in Japanese supermarkets. Produced along the Hidaka coast (south-central Hokkaido), Hidaka kombu cooks softer than rishiri or ma-kombu, making it ideal for both dashi and direct consumption (kombu-stewed tofu, kombu salad). Mitsuishi (formerly within the Hidaka district) is the historic harvest centre. Commercial volume is significantly larger than rishiri/rausu/ma-kombu, with substantial export volume to overseas Japanese-restaurant supply.
Regulatory status
| Japan | Food product; iodine disclosure under Japan rules |
|---|---|
| EU | Food import; iodine cap monitoring |
| United States | GRAS; FDA Prior Notice required |
| China | GACC food facility registration |
Looking for alternatives?
Common reasons buyers swap to a different ingredient — and what we'd suggest based on this ingredient's profile.
Vegan / plant-based alternatives
Hidaka Kombu (Mitsuishi Kombu) is animal-derived. If you need a non-animal source with similar functions, consider:
Sansho Pepper
山椒
Zanthoxylum piperitum source; INCI Zanthoxylum Piperitum Fruit Extract; MOQ from 1–10 kg (dried peppercorn); 100 g – 5 kg (powder).
Plant-based· shares 2 categories
Wasabi Powder
山葵粉末
Wasabia japonica (Eutrema japonicum) source; INCI Wasabia Japonica Root Powder; MOQ from 1–10 kg (powder); 100 kg+ (bulk paste).
Plant-based· shares 2 categories
Fucoidan
フコイダン
INCI Fucoidan (from various brown seaweeds); MOQ from 1–10 kg.
Plant-based· shares 2 categories
Easier China regulatory path
Hidaka Kombu (Mitsuishi Kombu) faces a more restrictive regulatory pathway in China. These alternatives have a simpler status in that market:
Akamoku (Gulfweed Seaweed)
アカモク
Fucoxanthin 0.05-0.3% dry weight; soluble dietary fibre 30-40%; alginate 15-25%.
Simpler in China· shares 3 categories
Nigari (Bittern / Magnesium Chloride)
にがり
Magnesium chloride 60–95% (varies by source); pH 6.5–7.5; coagulation rate ideal 0.4–0.7% in soy milk for tofu.
Simpler in China· shares 3 categories
Kanten (Agar)
寒天
Gel strength 600–1,000 g/cm² (varies by grade); galactose-rich polysaccharide; ash content <5% for premium grades.
Simpler in China· shares 3 categories
When does it make sense to swap an ingredient? Read the swap guide →
Japanese suppliers
Riken Vitamin Co., Ltd.
理研ビタミン株式会社
Chuo, TokyoEst. 1949English supportExport experienceFSSC 22000ISO 9001Industrial-volume Hidaka kombu
Yamaki Co., Ltd.
ヤマキ株式会社
Iyo, EhimeEst. 1917English supportExport experienceFSSC 22000Halal (selected lines)Kubara Honke / Kayanoya
久原本家 / 茅乃舎
Kasuya, FukuokaEst. 1893English supportExport experience
Disclaimer
Japan Ingredient Sourcing Platform introduces overseas buyers to Japanese ingredient manufacturers. The platform is an information service only and is not a party to any purchase, supply, or manufacturing contract between buyer and seller.
Information shown — including company details, product descriptions, regions of origin, minimum order quantities, lead times, certifications, and regulatory references — is compiled primarily from publicly available sources and manufacturer websites. Specifications change without notice; buyers are expected to verify current specifications, pricing, certification status, and regulatory compliance directly with each manufacturer before placing orders or signing contracts.
The platform operator is not licensed to provide legal, regulatory, customs, tax, or professional advice. References to third-party companies, products, certifications, trademarks, and geographical indications (GI) are factual and do not imply endorsement, sponsorship, or affiliation. All trademarks are the property of their respective owners.
Last updated: 2026-05-05