
Shanxi vinegar ceramic vat
An open ceramic vat holds the moist solid mash, or vinegar pei, during Shanxi aged vinegar’s aerobic acetic fermentation. A 2025 study records a Taiyuan example about 1 m wide and 1.2 m high.
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An open ceramic vat holds the moist solid mash, or vinegar pei, during Shanxi aged vinegar’s aerobic acetic fermentation. A 2025 study records a Taiyuan example about 1 m wide and 1.2 m high.

Large ceramic jars hold distilled baijiu during maturation. Fenjiu documents rows of aging jars in Shanxi, including specially specified unglazed earthenware; available sources do not establish one universal shape, volume or closure.

A buried ceramic fermentation jar holds the solid-state grain charge for light-aroma baijiu. Fenjiu reportage describes porcelain vats set into the floor; the cited sources establish no universal historical profile or dimensions.