Hokkaido, Japan — Ishikari River basin; rooted in Ainu salmon-fishing culture, developed into its contemporary form in the Meiji settlement period when Japanese cooking techniques were applied to local indigenous ingredients
Ishikari nabe is Hokkaido's most celebrated hot pot — named for the Ishikari River basin where Hokkaido's salmon population was historically so abundant that it sustained the Ainu indigenous people for centuries before Japanese settlement. The dish brings salmon, tofu, vegetables, and potato together in a miso-enriched broth that reflects Hokkaido's dual food identity: the marine richness of its coasts and the dairy-influenced, hearty cooking of its agricultural interior. The defining characteristic of ishikari nabe is the use of sake lees (sake kasu) as a secondary seasoning alongside the miso base. Sake kasu — the pressed solid residue from sake production — adds a fermented depth, gentle sweetness, and creamy body to the broth that distinguishes it from any other miso hot pot style. Hokkaido is Japan's largest sake kasu producer by virtue of its active brewery industry, and the ingredient's inclusion is both practical (proximity to supply) and flavourful. Salmon used in ishikari nabe must be fresh, not cured or smoked. The fish is cut into thick bone-in pieces so that the collagen and fat in the bones enrich the broth as it simmers. Unlike delicate Japanese broths that would be overpowered by strong fish, the miso base of ishikari nabe absorbs and integrates the salmon's oils and oceanic richness into a cohesive whole. Vegetables — hakusai (napa cabbage), potato, daikon, burdock, carrot — are added in order of cooking time, with the potato (a Hokkaido staple) often surprising visitors with its presence in a Japanese hot pot. Butter is sometimes added to the broth as a contemporary variation, reflecting the dairy culture of Hokkaido's agricultural western regions.
Rich miso-sake kasu broth with salmon fat and marine sweetness, potato body, and fermented depth
Use fresh, bone-in salmon pieces — the collagen and fat from the bones enrich the miso broth in ways that boneless fillet cannot Sake kasu is the distinguishing element: dissolve it into the broth after the miso for a layered fermented depth Add ingredients in order of cooking time: burdock and daikon first, then potato, then cabbage and tofu, then salmon last Miso should be added after the broth base is established and never boiled after addition — hard boiling destroys the delicate fermented flavour Potato is traditional and regional: do not omit it; it absorbs the miso broth as it softens and provides starchy body
Dissolve sake kasu separately in warm water or sake before adding to the pot — this ensures even distribution without lumps For a Hokkaido dairy twist: finish the broth with a small knob of butter just before serving — it enriches the miso without dominating Garlic chives (nira) added in the final minute add freshness and cut through the richness of the salmon and miso Serve with white rice and drink Hokkaido sake — the region's cold-climate breweries produce sakes with clean profiles that pair beautifully with miso Zōsui is the traditional finish: add cooked rice to the remaining broth after the meal and serve as porridge
Using cured or smoked salmon — the salt content and smoke overwhelm the miso and the dish loses its balance Boiling vigorously after adding miso — this destroys the miso's aromatic compounds and produces a flat, harsh broth Not using sake kasu — without it, the dish is a generic salmon miso soup, not ishikari nabe Adding all vegetables at once — they cook at very different rates and the potato will be raw while cabbage disintegrates Over-salting the broth before adding miso — miso contains significant salt and the broth will become too salty as it reduces