Sanpei-jiru
三平汁
The Edo-era fishermen's soup of the Matsumae domain — salted salmon or herring simmered with potatoes and daikon, no miso needed. The fish itself seasons the pot.
By Japanese Cookbook Kitchen · June 1, 2026
北海道 HokkaidōEdo era, 1603–1868
鍋- Prep
- 15 min
- Cook
- 25 min
- Serves
- 4
- Level
- Beginner
Long before Meiji settlers plowed Hokkaidō, the island's southern tip belonged to the Matsumae domain — the only han in Edo Japan that grew no rice, living instead off its trade monopoly with the Ainu and the staggering herring runs of the Hokkaidō coast. Fish was money, and salt was how money kept. Sanpei-jiru is the soup of that world: salt-cured herring or salmon simmered with whatever roots the short summer allowed, needing no miso or soy because the cure itself seasons the broth. Who Sanpei was — a fisherman, a clan retainer, a kind of plate — depends on which legend you prefer.
It remains the most austere and, arguably, the most elegant of Hokkaidō's fish soups. There is nowhere to hide: kombu, water, vegetables, and fish whose saltiness you must judge before the pot decides for you. Get that one call right and the broth comes out clear, deep, and quietly rich — winter food from people who counted every koku, and cooked like it.
Taste your salted fish before it goes anywhere near the pot. A hard-cured piece needs a 30-minute soak in cold water; a supermarket amajio fillet needs nothing. The whole dish rides on this one judgment call.
板前の一言 · A word from the kitchen
Ingredients材料
Serves 4
- 400 gsalted salmon fillet, in 4 cm pieces — shiozake — buy the saltiest grade you can find, or salt fresh salmon heavily and rest it overnight; salted herring is the older choice
- 1 Lkombu dashi — kombu only — bonito would crowd the fish, and Matsumae was kombu country
- 200 gdaikon, in thick quarter-moons
- 2potatoes, in large chunks
- 1/2carrot, in half-moons
- 1onion, in wedges
- 2 tbspsake
- 1negi, sliced on the bias
- salt — only if the fish comes up short — taste first
Method作り方
Step 1: Judge the fish
Cut off a sliver of the salted salmon and taste it. Pleasantly salty means proceed; aggressively salty means soak the pieces in cold water for 30 minutes. The fish is your only seasoning, so calibrate here.
Step 2: Start the roots
Bring the kombu dashi and sake to a simmer with the daikon, potatoes, carrot, and onion. Cook about 10 minutes, until the daikon turns translucent at the edges.
Step 3: Add the fish
Slide in the salmon pieces and simmer gently 8 to 10 minutes. Skim once, thoroughly, and never let the pot boil hard — salted fish toughens fast and clouds the broth.
Step 4: Taste, then season — maybe
Taste the broth. Properly salted fish will have seasoned it completely; add a pinch of salt only if it's genuinely flat. Adding miso here is how you make a different, lesser soup.
Step 5: Finish with negi
Scatter the negi over, give it one minute with the lid on and the heat off, and ladle into deep bowls making sure everyone gets fish, potato, and plenty of broth.
道具 · The tools
Equipment
Donabe
土鍋The clay hot-pot that makes nabemono taste like nabemono — a gentle, even simmer that carries straight to the table.
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Questions from the kitchen
Why no miso?
Because the salt-cured fish is the seasoning — that's the entire idea of the dish, and what separates it from ishikari nabe, its younger miso-rich cousin. The cure draws deep umami out of the fish into a clear broth that miso would only bury.
Who was Sanpei?
Take your pick of legends. One names a fisherman called Sanpei who threw the first pot together; another credits a retainer of the Matsumae clan; a third says the name comes from the crude sanpei plates it was once served on. All are told as fact in Hokkaidō, which is why we tell them as stories.
Salmon or herring?
Herring is the historical answer — it was the fish that built Matsumae's economy — and salted herring makes a deeper, oilier soup worth trying. Salmon is the modern standard and easier to buy well. Either way the fish must be cured, not fresh; fresh fish makes a thin, polite soup with no story to tell.
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