Koyanagi Sake Brewery Inspection Room

Twenty square metres with glass on three sides

Koyanagi Sake Brewery Inspection Room (小柳酒造検査室, Koyanagi Shuzō Kensashitsu) is a single-storey timber building of 1930 at 903-1 and 904-1 Ogicho, Ogi City, Saga Prefecture, listed as a Registered Tangible Cultural Property on 14 February 2002.

It stands south of the Showa West Storehouse. The building runs 5.4 metres along the ridge and 3.6 metres across, with a footprint of 20 square metres. The roof is Sangawara-buki pantile on an east-west ridge in Kirizuma-zukuri gabled form, and the door is in the east gable. The walls are Shitami-itabari weatherboarding, with sliding glass windows set into the south, east and north faces.

Only the two water tanks are smaller among the thirteen listed structures here. This is the smallest actual building on the site, and it still carries windows on three of its four sides.

Windows put there for light alone

The character of Koyanagi Sake Brewery Inspection Room is written in its glazing. On a plan of only 5.4 by 3.6 metres, three faces are filled with sliding glass windows. Just the west wall remains solid.

The work explains it. Inspection for liquor tax meant judging the colour and clarity of the sake by eye and measuring its density and strength. Reading a scale and calling a colour both need light. A country brewery in 1930 is unlikely to have had reliable electric lighting, so the light had to come through glass. Three glazed faces gave enough of it to work at any hour of the day.

That the windows slide matters as well. Sliding sashes ventilate the room and let the amount of light be adjusted with the season and the hour. By the early Showa years glass had become a material a provincial builder could obtain, and it reached even a small workroom like this one.

The weatherboarding belongs to the same family of finishes as the Showa East Storehouse, though that building uses widely spaced battens and this one, being far smaller, reads quite differently. The east-west ridge matches the koji room and the Muromae in the north-west corner.

The mark left by the liquor tax

The listing criterion is contribution to the historic landscape of the nation, and the registration number is 41-0040, the highest of the Koyanagi registrations. The Agency for Cultural Affairs values the building as a glimpse of how liquor tax inspection was carried out in the early Showa years.

Sake was long an important source of revenue for the state. Tax was assessed on volume produced and on strength, so every brewery was inspected and every brewery needed somewhere for that work to be done. Koyanagi Sake Brewery Inspection Room was built as a separate structure and survives as a listed one because it came out of administration rather than out of production. The koji room and the kettle room exist to make sake; this 20-square-metre hut exists to measure tax.

It was built in 1930, two years after the improvement buildings of 1928 and eleven years before the chimney and water tanks of 1941. Once the renewal of the plant had settled, a place for inspection was added to it.

The address, spanning 903-1 and 904-1, also fixes its position. Like the detached annex, it reaches onto the land bought to extend the site.

The south face is the one to look at. Sliding windows sit in a row above the horizontal lines of the boarding, and the depth of the room shows through the glass. The height and size of the openings hint at where the workbench must have stood.

Visiting

The interior of Koyanagi Sake Brewery Inspection Room is closed, though with three glazed faces it is a building whose inside can be made out to some extent from outside.

It lies south of the Showa West Storehouse; follow the wall of the big store round to the south and it appears. At 20 square metres it is easily lost among the larger buildings, so look for the small gabled roof on its east-west ridge and the row of windows on the south.

The yard can be entered during the hours of the Ogi Distillery in the converted part of the West Storehouse, 11:00 a.m. to 5:00 p.m. with irregular closing days. Whether you can walk round to the south side depends on the day, so ask at reception. No photography policy has been published. Directions and parking are set out on the Koyanagi Sake Brewery page. Details here were checked on 14 September 2026.