Raw
Ruibe
Ruibe — frozen raw salmon sashimi
Salmon or trout is sliced thin while still frozen and eaten raw — said to descend from an Ainu method of burying fish in snow to preserve it and guard against parasites, prized for how it melts slowly in the mouth.
- Origin: Hokkaido
- About 850 km north of Tokyo
What it's made of
Salmon or trout is frozen and sliced thin while still frozen, eaten as sashimi without thawing. The appeal is said to lie in that first icy bite giving way, moment by moment, to a slow melt in the mouth. Wasabi and soy sauce is the usual way to eat it, though a squeeze of lemon or a side of grated daikon are common too. The word can also cover other seafood — kokanee salmon, squid — sliced the same way while still frozen.
How it's made
Salmon or trout is frozen, often by burying it in snow, then sliced thin while it's still frozen solid. Freezing is also said to kill off any parasites hiding in the flesh, making the method one that serves preservation and safety at once. How it's eaten varies — lightly seared, or simply salted — and a variant called ruibe-zuke, where raw salmon and roe are marinated before freezing, is also passed down.
Why it took this shape
It's said to be a dish of Ainu origin. Salmon, a vital source of protein, was frozen by burying it in snow to see through the harsh cold of winter, and slicing it thin straight from that frozen state is said to be how this began. The name itself is said to come from Ainu words — ru, meaning "to melt," and ipe, meaning "food." The bitter cold climate itself became a natural freezer, and the dish can be read as one that got both preservation and a particular texture out of that single fact. It's known nationwide today, and on the island a variant made with pork instead of fish is also said to be made.
Before You Go
Dishes in the same style
- Akagarei no KomaburiRoe-bearing red flounder is sliced into sashimi and tossed with its own boiled, crumbled eggs, a dish from around the Amijiro area of Iwami Town. Said to have descended from a similar dish made with crucian carp roe, it pairs rich eggs with mild, fatty winter flounder for festivals and New Year's.
- Amagi no KawatakeA rare wild freshwater algae, found only in the Kogane River in Asakura, is dressed with sweet or three-flavor vinegar — said to have once been presented to the shogun, and now conservation efforts continue as it's listed as endangered.
Ingredients and dishes from this land
Also from Hokkaido
- Asahikawa RamenSoy-sauce broth built on seafood and pork bones, topped with lard so it stays hot. A response to the region's severe winters.
- Asahikawa HorumenA local dish that crosses Asahikawa's two soul foods — soy-sauce ramen and grilled pork offal. Pork offal, cleaned and prepped to remove its odor, sits on a soy-based broth. It was devised in Asahikawa in the 2010s.
- Gatatan RamenAshibetsu's local dish gatatan, turned into ramen: a salt broth thickened with potato starch, loaded with vegetables, meat and seafood, and finished with a stream of beaten egg.
- Bibai no TorimeshiChicken and onion are cooked into rice with soy sauce, sugar, and sake — said to trace back to a Meiji-era landowner in Bibai's Nakamura district who had tenant farmers raise chickens, then served them to guests.
- Bibai YakitoriOne skewer carries the whole bird — offal, skin and all.
- Biratori WagyuJapanese Black raised in Biratori, Hidaka, founded on breeding cattle brought from Shimane in 1962 — finished slowly through harsh winters, said to give the meat a notably deep flavor.