Higashi Iida Sake Brewery

A Working Sake Storehouse Built in 1873

Higashiiida Shuzōten Sakagura (東飯田酒造店酒蔵, also written Higashi-Iida Shuzoten Sakagura) is the principal brewing storehouse of a sake brewery in the Komatsubara district of Shinonoi, Nagano City, Nagano Prefecture. Built in 1873, the sixth year of the Meiji era, it was entered on Japan's national register of Tangible Cultural Properties (Buildings) on 23 February 2012.

The Agency for Cultural Affairs records the building at 35.0 metres along its ridge and 9.7 metres across, with a floor area of 357 square metres. Those figures matter, because they explain what you see first: a long white wall running beside the road, unbroken for the better part of forty paces, with a tiled roof that ends in a gable facing the street.

The construction is dozō, a Japanese technique in which a timber frame is packed and rendered with thick layers of earth and lime plaster. Walls of this kind were originally built to resist fire, and they have a second useful property: they hold temperature steady. Inside a Nagano winter, that thermal mass is the difference between a fermentation that behaves and one that does not.

Higashiiida Shuzōten itself dates to 1865, the first year of the Keiō era, and still trades under its principal label, Motooi-no-Matsu (本老の松). The storehouse has been in continuous use since it went up. This is not a museum piece: rice is steamed here every winter.

Registered, Not Designated, and Why That Distinction Matters

Japan runs two parallel systems for architectural heritage. Important Cultural Properties (重要文化財) and National Treasures (国宝) are designated, which brings tight controls on alteration. Registered Tangible Cultural Properties (登録有形文化財) are registered, a lighter-touch scheme introduced in 1996 for buildings that are typically fifty years old or more and that deserve protection while remaining in everyday use. The Higashiiida storehouse falls in the second category, and the criterion cited in its registration is contribution to the historic character of the national landscape.

That criterion is worth unpacking on site. Komatsubara sits on the Sai River, and the long plaster wall of the storehouse is the most substantial pre-modern structure on its stretch of road. Four buildings on the property were registered together on the same day in 2012: this storehouse, an adjacent dozō, a pickle store, and the reception room known as Matsu-no-Ma.

Details in the fabric

Above the entrance in the east gable end sits a mushiko-mado, a narrow barred window whose vertical plaster mullions resemble an insect cage, hence the name. It is a townhouse and storehouse motif found across central Japan, and here it is the one piece of ornament on an otherwise plain elevation.

The roof combines two materials: sangawara pantiles over most of the span, with sheet metal where later repairs demanded it. The Agency's structural summary describes the building as timber, single-storey with a partial second floor; the accompanying commentary describes the same building as dozō construction. Both are correct, since dozō is a plastered form of timber framing, but readers comparing the two entries may find the wording confusing.

Internally the space is divided by function rather than by floor. There is a storage hall for finished sake, a funaba where the pressing box once stood, and a moto-beya, the small room where the yeast starter is cultivated. Those three names describe a sequence, and walking them in order is close to walking through the process itself.

What a Visit Actually Involves

Higashiiida Shuzōten accepts brewery tours by advance reservation, generally for groups of one to twenty people. The Nagano Convention and Visitors Bureau gives the published hours as 9:00 to 16:00 and the tour itself as roughly thirty minutes, extending to forty-five or sixty minutes if you take the tasting, which is free of charge. Drivers are asked not to drink. Reported closing days vary between sources, so telephone ahead on 026-292-2014 rather than relying on any single listing.

One booking condition surprises most first-time visitors. During the brewing season, roughly November to March, anyone entering the kōji room is asked to avoid natto, yoghurt, kimchi and citrus fruit beforehand. The rice-mould culture is easily overwhelmed by competing organisms, and the room is held near forty degrees Celsius at high humidity, which suits every microbe in the building, wanted or otherwise.

The kettle

Most breweries now steam their rice with boiler-generated steam. Higashiiida still fires a wagama, a large open kettle heated from below by a burner. Around 500 litres of water go into the kettle, topped by a koshiki steaming vessel that takes up to 600 kilograms of rice. The flue beneath is laid in a brick spiral, so the flame circulates rather than striking one spot, and the water heats evenly. Look at the inside of the kettle and you will see scrape marks: the local groundwater is moderately hard, calcium builds into a crust roughly two millimetres thick over a season, and it is ground off every spring.

That water comes from the Sai River system, filtered through gravel beds beneath the valley floor. Calcium and magnesium feed the microbes in the fermenting mash, and the resulting sake tends dry and sharply defined. Only two breweries draw on this particular source: Higashiiida and its neighbour Nishiiida, a few minutes' walk away.

Three siblings, three sakes

The brewery is run by three siblings who each take full responsibility for their own batches, from recipe through to bottling, rather than dividing work between a single master brewer and his hands. Jun, the sixth-generation tōji, makes a yamahai-style sake called Koi. His elder brother Rei makes a light junmai called Tsuya. Their sister Miyuki makes a junmai ginjō called Sumi. Ask which is which at the tasting counter and you will get three different answers about what sake ought to be.

Two things outside the storehouse repay a look. The reception room, Matsu-no-Ma, carries a kote-e on its wall: a relief modelled in wet plaster with a trowel, showing a pine and two cranes. Traces of the original green and brown pigment are still visible in raking light. And the staircase inside the brewing storehouse has been in place since the brewery opened, with the master carpenter's signature written on the underside of the treads.

Photography is generally permitted on tours, though it is courteous to confirm with your guide before the kōji room. The brewery is about five kilometres north of JR Shinonoi Station, roughly twenty minutes by car from central Nagano, on the road that follows the Sai River towards the Odagiri dam. There is no convenient bus, so most visitors come by car or taxi.