Konoshiro-zushi Kumihama whole-fish okara preserved sushi

Konoshiro-zushi (このしろ寿し) is a sugata-zushi from Kumihama in Kyotango City, Kyoto Prefecture that uses a whole konoshiro — a fish typically 20–25 centimetres long — filled with cooked okara (uno-hana) instead of rice. Once a household method of preserving the winter catch, the dish remains seasonal: production today is limited to a short winter period and to only one or two shops within Kumihama town.

Konoshiro and okara: the defining ingredients

Konoshiro-zushi is defined by two simple but specific choices: the fish and the stuffing. The fish is konoshiro (sometimes called kohada in the Kanto region), taken whole for a sugata-zushi presentation. In Kumihama the fish used are about 20–25 centimetres long. Rather than a bed of vinegared rice, the Kumihama version is filled with okara (the cooked soy-pulp known locally as uno-hana). That use of okara — not rice — is the distinguishing feature of Kumihama’s konoshiro-zushi.

Variants of whole-fish konoshiro sushi exist elsewhere: the Amakusa area of Kumamoto Prefecture has konoshiro presented whole but prepared with rice, while parts of the Yatsushiro Bay coastline in Kyushu also use okara and call their versions Yoshino-zushi or unohana-zushi (this region’s konoshiro okara sushi shares the stuffing approach used in Kumihama).

How konoshiro-zushi is made

The traditional, commonly practised method in Kumihama follows a concise sequence of steps. Fatty, in-season konoshiro are split along the back (back-slit) and treated with vinegar or salt to begin the preservation. Separately, okara is cooked in a pan with sugar, vinegar and mirin (and similar seasonings) until it becomes sweet-sour in flavour. Into that warm, seasoned okara are mixed hemp seeds (onomi) and strips of yuzu peel; the mixture is packed tightly into the cavity of each cleaned fish to re-form the fish’s shape.

Each stuffed fish is then wrapped individually — traditionally to keep air off the surface — and stored in a cool, dark place so the flavours can marry. This technique preserves the fish while letting the seasoned okara permeate the flesh; when ready to eat the fish is cut into four or five thick slices and served as-is.

Seasonality, fishing and local production

Historically konoshiro-zushi was a household preserved food produced in the local winter season. The long local description of the catch season runs roughly from about September through about April, and households made the dish during those months to preserve the bay’s supply.

In Kumihama Bay the fish are taken by gill nets. Today the dish’s production has narrowed substantially: only one or two shops in Kumihama town continue to manufacture and sell konoshiro-zushi, and those shops operate during a shorter winter window, roughly from November to March. Bad weather can prevent fishing and, because the product is made by hand in small quantities, the available supply is limited.

Preservation, storage and serving

Konoshiro-zushi is rooted in preservation practice. The initial salting or vinegar treatment of the whole fish, the sweet-vinegar cooked okara stuffing, and the subsequent wrapped storage all serve preservation and flavour development purposes. In modern practice each fish is wrapped — for example in plastic wrap — to keep it from contact with air and placed in a cool, dark place while the flavours blend.

When ready, the whole stuffed fish is cut into four or five pieces and eaten without further preparation. That ready-to-eat presentation reflects the dish’s history as a preserved, prepared item rather than a component to be assembled at the table.

History and documentary record

Konoshiro fishing and konoshiro products have long presence in the Kumihama area. Local memory preserves a folktale called “Konoshiro-tori” that recalls the past importance of konoshiro fishing in Kumihama Bay. Documentary evidence reaches back to the Nara period: wooden tags (mokkan) recording taxes delivered to the capital mention konoshiro and even use the characters “近代” to denote the fish.

A local tradition links a konoshiro koji-zuke product from Kumihama to the events surrounding the 1600 Battle of Sekigahara. According to one account, a retainer of the Hosokawa family arranged for Kumihama’s konoshiro koji-zuke to be presented to Tokugawa Ieyasu as a Boys’ Festival gift; a letter of thanks bearing Ieyasu’s kaō is preserved at Nyoiji, near Matsukura Castle in Kumihama, and that episode is recounted in local sources as helping the Hosokawa family avoid peril.

The printed municipal record Kyoto-fu Kumano-gun-shi (published 1923) contains the only surviving written description that can be confirmed for the local konoshiro preparations; scholars note that the date when the local product shifted into the present sugata-zushi form is not recorded.

FAQ

What fish is used in konoshiro-zushi?

The fish used is konoshiro, about 20–25 centimetres long, prepared whole as a sugata-zushi.

Where is konoshiro-zushi from?

It is a local dish of Kumihama in Kyotango City, Kyoto Prefecture.

When is konoshiro-zushi made and sold locally?

Historically prepared in the winter catch season (around September–April), it is now produced in winter (around November–March) by one or two shops in Kumihama.

How is konoshiro-zushi eaten?

The stuffed whole fish is cut into four or five pieces and eaten as-is.