Rausu Kombu (Premium Eastern Hokkaido Kelp)
羅臼昆布 (Rausu Kombu)
Pourquoi sourcer au Japon
The Shiretoko-Rausu coast is a UNESCO World Natural Heritage region; cold Okhotsk currents produce slow-growing premium kombu no other origin matches.
Spec clé
Glutamate 2.5–4.0% dry weight (highest among Japanese kombu); iodine 250–600 mg/100g; lipid carry-over yields characteristic richness.
Produit fini typique
Premium kaiseki dashi, top-tier kombu candy / kelp tea, fine-dining hospitality export.
At a glance
- Fournisseurs répertoriés
- 2 fournisseurs
- MOQ typique
- 10–50 kg dried kelp; 1–10 kg extract
- Délai typique
- 10–16 weeks (allocation-constrained)
- Régions d'origine
- Hokkaido (Shiretoko-Rausu coast)
- Catégorie
- Fonctionnels marins
- Saison de récolte
- July – September; drying through October
- Statut réglementaire au Japon
- Food product; iodine-content disclosure under Japan food labelling rules
- Nom INCI
- Saccharina Diabolica Extract
- Nom japonais
- 羅臼昆布
- Romaji
- Rausu Kombu
À propos de cet ingrédient
Premium kombu variety from the Shiretoko-Rausu coast in eastern Hokkaido. Distinguished by an exceptionally rich, slightly fattier dashi character — sometimes called the 'king of kombu' in Kansai dashi circles. The cold Sea of Okhotsk waters around Rausu and the steep underwater shelf produce slow-growing kombu with thick, deeply flavoured fronds. Allocation-controlled supply through the Rausu Fisheries Cooperative; commands the highest per-kg pricing of any Japanese kombu variety. Distinct from the existing rishiri-kombu and ma-kombu entries in profile and price.
Statut réglementaire
| Japon | Food product; iodine-content disclosure under Japan food labelling rules |
|---|---|
| Union européenne | Food import; iodine cap monitoring (EU recommends ≤600 µg/day) |
| États-Unis | GRAS; FDA Prior Notice required |
| Chine | GACC food facility registration |
Fournisseurs japonais
Riken Vitamin Co., Ltd.
理研ビタミン株式会社
Listed Japanese ingredient and seasoning company with a 75+ year history in seaweed extracts, kombu-derived dashi, fat-soluble vitamins, and emulsifiers. Operates as a primary B2B supplier for Japanese food manufacturers and increasingly serves overseas premium-dashi and functional-food customers. Multiple production sites across Japan plus subsidiaries in the US and Europe.
→
Kubara Honke / Kayanoya
久原本家 / 茅乃舎
Family-owned Fukuoka producer founded 1893, expanded through the Kayanoya brand from 2005. Produces premium dashi packs, mentsuyu, soy-sauce blends, and Japanese broth bases sold through directly-operated retail in Japan, New York, and Paris. Focus on additive-free, MSG-free formulations using Japan-origin katsuobushi, kombu, and shiitake. Increasingly active in B2B premium dashi supply for export-focused Japanese restaurants and natural-food retail.
→