FermenteaWhere food goes to change
Equipment · Barrels and casks
A coopered wooden kioke used by Kakukyu in Okazaki for Hatcho miso: a broad vat capped with a carefully stacked pyramid of river stones during maturation lasting more than two years.
At Kakukyu's Hatcho Miso works in Okazaki, broad wooden kioke hold the soybean paste while a pyramid of natural river stones rests on top. The prefectural tourism guide describes vats nearly two metres in diameter that are still used today. Its description gives the working arrangement, but not the vessel's height, capacity, timber species, or the stones' total weight.
The stones remain stacked over the vat while the miso ages for two summers and two winters—more than two years. The documented function of this equipment is both containment and top weighting during long maturation. The account does not explain the engineering of the load, any follower or cover beneath the stones, or the vat's internal construction, so those details should not be assumed.
The kioke at Kakukyu in Hatcho-cho, Okazaki, Aichi Prefecture, is a place-specific arrangement, not a generic construction plan. No capacity, safe load rating, stone count, stacking instructions or maintenance procedure is given, and the reported diameter alone is not enough to size or safely load a vat.
Aichi Now describes Kakukyu's maker history as continuing since the Edo period and says nearly two-metre wooden vats are still in use. The source does not date this particular vat or establish when the stone-weighted kioke form began.
The source documents river stones stacked in a pyramid on top of a large vat, but gives no load rating or stacking controls; the structural risk cannot be quantified from this account.
Hazard sourceThe source gives no structural load rating, safe stacking method, inspection schedule, or handling guidance. Do not treat the reported diameter as evidence that another vat can safely carry a similar stone stack.
The source gives no capacity, height, wood species, hoop material, stone count, or total weight for the vats or stone stacks.
Source →The reported nearly two-metre diameter describes Kakukyu's vats; it is not a construction specification or load rating for another vessel.
Source →Aichi Now locates Kakukyu in Hatcho-cho, Okazaki; this identifies the documented place of use, not the origin of every kioke.
Jars, barrels, skins, leaves, pits and whole rooms decide much of what happens to fermented and cured food. This is how a container works on its contents, and how people in different places chose theirs.
Coopered vessels use shaped staves and hoops, but portable barrels, large foeders and upright wooden vats serve different roles. Materials and uses vary by place and process.
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Aichi Now: Official Travel Guide of Aichi, Aichi PrefectureDescription · Dimensions · Materials · Location · Use · History
Kakukyu Hatcho Miso (Hatcho Miso Village)Kakukyu's Hatcho miso is aged in giant wooden vats with natural river stones stacked in a pyramid over them for two summers and two winters, more than two years.
The vats in use today are nearly two metres in diameter.
The page locates Kakukyu Hatcho Miso in Hatcho-cho, Okazaki, Aichi Prefecture.
Cited in: A wooden vat with a stone crown; Use over two years; A place-specific record
Kakukyu Hatcho MisoForm · Materials · History · Use · Geography
Kakukyu technique: Stone stackingKakukyu identifies the wooden vat as 木桶 (kioke) and documents the pyramid stone-stacking method for Hatcho miso.
The maker reports one approximately 6-tonne miso charge with approximately 3 tonnes of around 350 natural river stones; these production figures are not a structural design or safe-load rating.
The maker says skilled workers still stack the stones and documents this practice in Hacchō-chō, Okazaki; this is Kakukyu's place-specific account, not a universal claim.