Hamada Soy Sauce Store

The Hamada Shōyu Shop

On a quiet street in the Koshima district, on the western edge of Kumamoto City, a two-story wooden building turns a deliberately uneven face to the road. This is the shop of Hamada Shōyu, a soy sauce maker that traces its founding to 1818, in the last decades of the Edo period. The shop building itself dates from roughly the same era. It runs about six ken across the front and five ken deep, close to eleven meters by nine, with a footprint near 140 square meters beneath a gabled roof of pantile.

Koshima was once a working port. It grew on a sandbar between two river channels, with the Ariake Sea close at hand, and through the Edo and Meiji eras it served as a place where goods were gathered, stored, and shipped onward. A soy sauce house sat well in that economy, drawing on the groundwater for which Kumamoto is known. The Hamada family started as grain dealers under the shop name Hamaya before turning to brewing, by family account, and the firm still works from this site.

Registered, Not Designated

Japan protects its cultural properties along two separate routes, and the distinction matters here. The better-known route is designation: the ranks of National Treasure and Important Cultural Property, kept for items of exceptional value and bound by strict controls. The Hamada Shōyu Shop belongs to the other route. It is a Registered Tangible Cultural Property, part of a lighter system introduced in 1996 to look after the far larger number of ordinary historic structures that give Japanese towns their texture.

Registration is led by owners more than by the state, leaves everyday use in their hands, and is meant for buildings that contribute to the historic landscape. That phrase is the actual criterion under which the shop entered the national register in October 2007. The value claimed is less about rarity than about continuity: a street like this one keeps its memory of a port town partly because buildings of this kind stay in place and in use.

Reading the Façade

The shop repays a slow look from across the road. Its entrance sits on the long side of the building, under the eaves rather than the gable end, an arrangement carpenters call hirairi. The walls are finished in thick plaster worked over the structure, a fire-conscious treatment usual in merchant buildings.

Look closely and the front splits into two halves that do not match. The southern half carries a deep secondary eave, a geya-bisashi, sheltering the openings below. The northern half sets a band of namako-kabe along its lower wall: square tiles laid flat with plaster ridges raised between them in a crosshatch, named for the sea cucumber the rounded joints were thought to resemble. The asymmetry was a choice, and it lends a small building real weight.

Next door stands the company's third storehouse, registered on the same day. Its lower wall continues the same namako pattern, so the two read as a single composition along the street. The storehouse turns its gable to the road where the shop turns its flank, and that one change of orientation keeps the row from falling into repetition.

Around the Site

The Hamada premises hold more than the shop. Several other structures carry the same 2007 registration, among them a small Western-style annex from around 1930 that began as a tobacco shop, a former stone room once used to hold brewing mold at steady temperature and humidity, and older storehouses tied to the early years of the business.

Part of the complex has found a second use. A brewing storehouse on the site was renovated under the direction of architect Kengo Kuma after the 2016 Kumamoto earthquakes, its old roof timbers and the bamboo lath behind the earthen walls left exposed, and it now holds a shop on the ground floor and a café above. Soy-sauce soft serve is the signature item. Opening days are limited and the café has closed for periods, so it is wise to confirm before a special trip. A camphor tree said to be about four centuries old grows nearby, and traces of Koshima's port-town past linger in the lanes around the site.