The Working Heart of a Soy Sauce House
Below the stone wall that carries the Ishii residence on the slopes of Nōma, on the southern side of the plot, stands the building where the family's soy sauce was actually made. Dated to around 1885, in the middle of the Meiji era, the brewing shed is the oldest of the seven registered Ishii structures and the one whose purpose was wholly industrial. Everything else on the estate, the house, the gate, the storehouses, existed because this building worked.
It is a low timber range, tile roofed, covering about 219 square metres, and it still holds within it a stone well and a washing area, the water at the centre of any soy operation.
Two Sheds and a Well
The brewing shed is really two ranges set side by side. The larger, running north to south at roughly fourteen metres by ten, is the moromi-gura, the storehouse for the moromi: the fermenting mash of soybeans, wheat, salt and water that becomes soy sauce as it sits in great wooden vats over months and years. It is built with a kirizuma, a simple gabled roof, finished in sangawara pantile.
Against its east side runs a second, narrower range about six metres deep, with a lean-to geya eave thrown out along its east face. This is the soy storehouse proper. Set into the middle of that eastern lean-to is a stone well with a washing area beside it, placed exactly where the daily labour of the trade would need it.
The arrangement is plain, even austere, and that plainness is the point. A brewing shed is a machine for fermentation. Its long unbroken vat hall, its single ridge, its proximity to water, all follow from the work rather than from any wish to impress. Reading the building is reading the process.
Why It Was Registered, and What to Look For
The brewing shed entered the national register of tangible cultural properties on 9 February 2005 as number 37-0247, one of the seven Ishii buildings registered that day. The criterion was its contribution to the historic landscape. Registration recognises the building's value while leaving it in private ownership under a light protective regime.
Its importance is that it is the functional core of a surviving brewing estate, and the oldest part of it. Shōdoshima is one of Japan's principal soy sauce regions, and in 2021 the Sanuki brewing tradition of which it forms part became the country's first item entered on the national register of intangible folk cultural properties. A Meiji-era moromi shed that still stands intact, well and all, is a tangible counterpart to that living technique.
Look first at the long low silhouette and understand that what you are seeing is a fermentation hall. Note how the building sits below the house, close to its water source. If you can make out the eastern lean-to, the well and washing area mark the spot where the day's work began. Set this against the brewing you can actually watch nearby and the shed stops being a quiet old roof and becomes the engine of the whole compound.
The shed is private property and is not open to the public; view it from outside. To see soy sauce being made in a building of this kind, the Marukin Soy Sauce Memorial Museum a short distance away is open to visitors, with a working wooden-vat storehouse alongside it, and the Hishio-no-Sato walking routes pass through the brewing streets of Nōma.
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Q&A
- Can I watch soy sauce being made here?
- Not in this shed, which is private and not open. To see the process, the nearby Marukin Soy Sauce Memorial Museum is open to visitors and has a working wooden-vat storehouse where brewing can be viewed.
- What is moromi?
- Moromi is the fermenting mash of soybeans, wheat, salt and water that slowly becomes soy sauce in large vats. The larger of the two ranges here, the moromi-gura, was the storehouse that held those vats.
- Why is there a well inside the building?
- Water is central to brewing. A stone well and a washing area sit in the eastern lean-to of the shed, placed where the daily work of making soy sauce required ready access to water.
- How old is this building?
- It dates from about 1885, in the Meiji era, which makes it the oldest of the seven registered Ishii buildings and the original working heart of the estate.
- What is the wider significance of soy sauce here?
- Shōdoshima is one of Japan's main soy sauce regions. In 2021 the Sanuki brewing tradition became the first item on the national register of intangible folk cultural properties, and this shed is a tangible survival of that craft.
Basic Information
| Name | Kikko-ishi Ishii Family Residence, Soy Sauce Brewing Shed |
|---|---|
| Location | 262 Saka-no-yama-kō, Nōma, Shōdoshima-chō, Shōzu-gun, Kagawa Prefecture |
| Category | Registered Tangible Cultural Property (building), No. 37-0247 |
| Registered | 9 February 2005 (gazetted 28 February 2005) |
| Registration criterion | Contributes to the historic character of the national landscape |
| Built | About 1885 (around Meiji 18) |
| Quantity | 1 building |
| Structure | Timber, single storey, tiled roof, building area about 219 m², with stone well and washing area |
| Access | Private property; exterior viewing only, interior not open |
References
- National Database of Cultural Properties, Agency for Cultural Affairs: Kikko-ishi Ishii Family Residence, Soy Sauce Brewing Shed
- https://kunishitei.bunka.go.jp/heritage/detail/101/00004655
- Shōdoshima Town: the Sanuki soy sauce brewing tradition (registered intangible folk cultural property)
- https://www.town.shodoshima.lg.jp/gyousei/kakuka/shogaigakushuka/2/5909.html
- Walking the Hishio-no-Sato soy district, Shōdoshima (My Kagawa)
- https://www.my-kagawa.jp/shodoshima/feature/shodoshima/beauty3
- Kagawa Prefecture: list of registered tangible cultural properties
- https://www.pref.kagawa.lg.jp/kenkyoui/shogaigakushu/bunkazai/culturalassets/culturalassets_16.html
Last verified: 2026.06.25