Why source from Japan
Hakodate Bay is the recognised heart of ma-kombu production; specific harvest grounds (Shirokuchi-hama) carry sub-brand premiums in Kansai dashi-supply.
Key spec
Glutamate 1.5–3.0% dry weight; mannitol 5–15%; iodine 200–500 mg/100g; sweet-character dashi distinct from rishiri.
Typical end-product
Kansai-style dashi packs, kelp candy / kelp tea, kombu extract for cosmetic moisturisers.
At a glance
- Suppliers listed
- 3 suppliers
- Typical MOQ
- 10–50 kg dried kelp; 1–10 kg extract
- Typical lead time
- 8–14 weeks
- Regions of origin
- Hokkaido (Kameda Peninsula, Minamikayabe, Hakodate), Aomori (northern coast)
- Category
- Marine functional ingredients
- Harvest season
- July – September; drying through October
- Japan regulatory status
- Food product; iodine-content disclosure under Japan food labelling rules
- INCI name
- Saccharina Japonica Extract
- Japanese name
- 真昆布
- Romaji
- Ma-kombu
About this ingredient
The 'true' kelp variety harvested in southern Hokkaido (Kameda Peninsula, Hakodate, Minamikayabe) and northern Aomori. Distinguished from rishiri by its sweeter dashi character and broader, thicker fronds. Ma-kombu is the heritage choice for Kansai-style refined dashi and most kombu-based confectionery (kelp candy, kelp tea). Allocation-controlled supply through Hakodate Fisheries Cooperative; specialty single-source ma-kombu commands premium pricing in Tokyo and Kyoto kaiseki kitchens. Distinct from the existing rishiri-kombu entry in profile and use case.
Regulatory status
| Japan | Food product; iodine-content disclosure under Japan food labelling rules |
|---|---|
| EU | Food import; iodine cap monitoring (EU recommends ≤600 µg/day) |
| United States | GRAS for food; FDA Prior Notice required |
| China | GACC food facility registration; verify import allowance |
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
Ma-Kombu (True Kelp) 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 3 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 3 categories
Shio Koji
塩麹
MOQ from 20–100 kg.
Plant-based· shares 3 categories
Easier China regulatory path
Ma-Kombu (True Kelp) faces a more restrictive regulatory pathway in China. These alternatives have a simpler status in that market:
Japanese Abalone (Awabi)
鮑 / アワビ
Protein 18-22%; collagen-rich; taurine 750-950 mg/100g; mother-of-pearl shell upcycled to cosmetic-grade calcium carbonate.
Simpler in China· shares 4 categories
Sansho Pepper
山椒
Zanthoxylum piperitum source; INCI Zanthoxylum Piperitum Fruit Extract; MOQ from 1–10 kg (dried peppercorn); 100 g – 5 kg (powder).
Simpler in China· shares 3 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).
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 9001Ma-kombu feedstock for premium dashi extracts
Kubara Honke / Kayanoya
久原本家 / 茅乃舎
Kasuya, FukuokaEst. 1893English supportExport experienceMa-kombu blend dashi packs
Yamaki Co., Ltd.
ヤマキ株式会社
Iyo, EhimeEst. 1917English supportExport experienceFSSC 22000Halal (selected lines)
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Last updated: 2026-05-05