Vietnamese fish-sauce wooden vat
A large upright stave-built vat used in documented Vietnamese fish-sauce production, with a weighted or covered top and a low outlet for drawing liquid; Phu Quoc examples belong to a living regional craft.
Equipment · Barrels and casks
Coopered barrel, cask and large wooden vat
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.
How a coopered vessel is built
A coopered barrel is a hollow wooden vessel made from lengthwise staves drawn together by hoops. At each end, a groove in the staves seats a separately made circular head. The Jerez Sherry appellation authority describes the convex-sided cask, fitted ends and a bunghole drilled at the widest part. These features describe a closed vessel for liquid; a tap is optional.
Barrel and cask often describe portable horizontal forms, while a foeder or large vat can be much bigger and may stand upright. Their capacities and construction vary. A coopered barrel is not a fixed fermentation tank, and a photograph alone cannot show which food it held or what stage it served.
Sources for this section
Different traditions, different vessels
In Belgium, Brouwerij Boon describes Lambic wort cooling in an open coolship before maturing in large oak foeders. Repeatedly used foeders hold a brewery microculture, and Lambics from different casks and years are blended for geuze. The foeder belongs to this brewery's maturation system; the open coolship is a separate stage.
In Japan, Yamaroku Soy Sauce reports making soy sauce in cedar kioke of 3,000–6,000 litres. These are large wooden fermentation vats, unlike the smaller Bordeaux casks in the linked photograph. Aichi Prefecture documents another upright vat in Okazaki: Hatcho miso matures for more than two years in wooden vats under a cone of river stones. These examples have distinct materials, scale and process.
Sources for this section
Reading barrel photographs carefully
The linked Bordeaux image documents barrels in a wine cellar and identifies them as ageing for twelve months. It shows one portable cask form and setting, not a cooper at work, an upright vat or a fermentation sequence. This photographed form is useful to compare with larger foeders and vats, but it is not universal.
Wood species, stave thickness, volume, previous contents, lining and closure can differ substantially between new small barrels and old large vats. The cited sources give no single capacity range, build specification or care routine for this family. The generated illustration is a reconstruction of one documented barrel form, not a photograph of a particular brewery.
Sources for this section
Equipment details
PowerNo power The vessel is unpowered; its transport, fermentation and maturation uses do not require integral power.
How you get oneBought from a maker The Jerez authority documents coopers assembling staves, fitting heads and setting hoops; larger vats are also craft-made but vary by tradition.
CareCare varies by vessel and product. Brouwerij Boon says its large oak foeders need a thorough overhaul about every fifteen years; that is a brewery-specific interval.
Made of
- Wood — Lengthwise staves and separately fitted heads
Species vary; cited examples include oak foeders in Belgium and cedar kioke in Japan. - Metal — Hoops holding the staves together
The Jerez cooperage description specifies metal hoops; other hoop materials are possible.
Limits
A barrel photograph does not establish whether it was used for fermentation, maturation or transport; the process must be documented separately.
Source →A small transport barrel, large oak foeder and upright cedar or miso vat are not interchangeable. Capacity, wood species, closure and use vary.
Source →The selected sources document uses in Spain, Belgium and Japan, not one origin or a universal global history.
Source →Places
Jerez de la Frontera
Manufacture · Locality evidenceThe Sherry appellation authority documents cooperage craft here; the form is not exclusive to Jerez.
Lembeek
Documented use · Locality evidenceBrouwerij Boon documents oak foeders for Lambic maturation at its brewery; this is one regional use.
Shodoshima
Documented use · Locality evidenceYamaroku documents cedar kioke for soy-sauce fermentation; this large vat differs from a small transport cask.
Okazaki
Documented use · Locality evidenceAichi Prefecture documents vats in the specific Hatcho miso tradition, weighted by stacked river stones.
Related
Variants
Used for
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Koikuchi soy sauce
Japan's standard all-purpose soy sauce: soybeans and wheat grown over with koji mould, brined, fermented for months, pressed and usually heated into a reddish-brown, savoury liquid.
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More from Andalusia
Sherry bota and solera array
A Jerez bota is a coopered oak butt used for wine ageing. In a criaderas-and-solera array, butts at successive ages are arranged in scales and partly drawn and replenished; the bota's capacity and fill depend on the documented system.
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Sources
Consejo Regulador of the Sherry DenominationsConstruction · Form · Manufacture
The CooperageStaves, hoops, separate heads, end grooves and a bunghole form the coopered cask described by the appellation authority.
Cited in: How a coopered vessel is built; Reading barrel photographs carefully
Brouwerij BoonDocumented use · Maturation
Our unique processLambic wort is cooled in an open coolship before oak foeder maturation; the brewery blends lambics from different vessels and years.
Cited in: Different traditions, different vessels; Reading barrel photographs carefully
Brouwerij BoonDocumented use · Maturation
Lambiek BoonA two-year lambic maturation in oak barrels or foeders is described by the brewery.
Cited in: Different traditions, different vessels
Yamaroku Soy SauceDocumented use · Materials · Capacity
About YamarokuYamaroku reports making soy sauce in 3,000–6,000 litre cedar kioke and says the vessels host microorganisms.
Cited in: Different traditions, different vessels; Reading barrel photographs carefully
Aichi PrefectureDocumented use · Geography · Form
Hatcho MisoTraditional Hatcho miso is made in wooden vats weighted by stacked river stones and matured over two years in Okazaki.
Cited in: Different traditions, different vessels; Reading barrel photographs carefully
Brouwerij BoonCare
HistoryBoon says its oak foeders require a thorough overhaul about every fifteen years; this is specific to its brewery.
Wikimedia CommonsHistorical visual reference
BarriquesThe file page identifies Bordeaux wine barrels stored for twelve-month ageing and lists CC BY 3.0.