Where the Fermentation Began
At the southern edge of the Miharaya grounds, along the line where the storehouses meet the family’s living quarters, stands the South Storehouse (Minamigura), wedged between the East and West storehouses. It is a low two-storey earthen building of about five by two and a half ken, set east to west, with a pantile roof and a gabled form. What sets it apart is its original use: the eastern half served as the koji-muro, the warm, controlled room where rice or barley is inoculated with koji mould to begin fermentation.
The South Storehouse dates from around 1877 and carries the registration number 20-0125. Its deliberately low profile, which the record calls a storehouse “of low stature,” suits a building whose eastern rooms needed steady, even warmth.
A Hinge Between Store and Home
The South Storehouse sits at a junction. Behind it lie the living quarters; before it, the courtyard and the run of working storehouses. A doorway near the centre of its south side opens toward the inner court, and through it materials were carried in and out, so the building also played a real part in the daily movement of goods across the compound.
That position, half in the working world and half against the home, is why the koji room belonged here. Fermentation is the quiet, patient centre of any miso or soy-sauce house, and at Miharaya it began in this modest, low-roofed store.
The Humblest Building, and the Most Essential
Among the six Miharaya buildings registered in 2003, the South Storehouse is easy to overlook: lower than its neighbours, hemmed in on both sides, without a street face to show. Yet its original role in making koji puts it at the heart of the whole enterprise.
The register protects the group for its contribution to the historic landscape, and the South Storehouse earns its place by function as much as by form. It is a reminder that what looks least imposing in a merchant complex can be exactly where the work begins.
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Questions & Answers
- What was special about the South Storehouse?
- Its eastern half originally served as the koji-muro, the warm room where koji mould is cultivated to start the fermentation of miso and soy sauce.
- Where does it stand?
- At the southern edge of the grounds, on the boundary with the living quarters, wedged between the East and West storehouses.
- Why is it built so low?
- Its low profile suited its use; the koji room needed steady, even warmth, and a low, compact space holds heat more evenly.
- When was it built?
- Around 1877, in the same phase as the other Miharaya storehouses.
- Can I go inside?
- No; it is a private working storehouse. The complex is best viewed from the surrounding streets.
Basic Information
| Name | Miharaya Shoten Minamigura (South Storehouse) |
|---|---|
| Location | 879-1 Sakuraeda-cho and 1151-1 Goten, Nagano City, Nagano Prefecture |
| Designation | Registered Tangible Cultural Property (registration no. 20-0125) |
| Registered | 18 March 2003 (gazetted 8 April 2003) |
| Count | 1 building |
| Structure | Earthen-walled, two storeys, pantile roof; building area approx. 46 m2 |
| Date | Around 1877 (early Meiji era) |
| Use | Originally koji room (eastern half) |
| Owner | Miharaya Co., Ltd. |
References
- Agency for Cultural Affairs, National Cultural Properties Database — Miharaya Shoten South Storehouse
- https://kunishitei.bunka.go.jp/heritage/detail/101/00003238
- Nagano City — List of Registered Tangible Cultural Properties
- https://www.city.nagano.nagano.jp/n151100/contents/p002914.html
- Miharaya Co., Ltd. — official site
- https://miharaya.co.jp/
Last verified: 2026.07.05