cheongju

The Chinese characters 清酒 (clear + liquor) first appeared in administrative texts of the Han dynasty, around the second century BCE, to distinguish filtered grain wine from its cloudy, unfiltered counterpart. The filtered version was more expensive, harder to produce, and associated with ritual and court use. When Korean scribes borrowed the characters, they read them as cheongju, following the Sino-Korean pronunciation system. Japanese readers of the same characters read them as seishu, the formal name for sake.

Rice cultivation in the Korean peninsula dates back at least three thousand years, and fermented rice beverages were part of ritual life long before Chinese characters arrived to name them. The technology of filtering, however, moved eastward from China during the Goryeo period. A cloth or hemp-lined straining bag pressed through a ceramic jar separated the clear liquor from the grain solids. What remained in the bag became the raw material for doenjang, fermented soybean paste, so the two foods have always shared an origin moment.

Cheongju held a ceremonial rank in Joseon. The court maintained a dedicated office, the Saongwon, responsible for producing and storing the liquor for royal rites. The Gyeongguk Daejeon, the Joseon legal code of 1485, specified which types of liquor were appropriate for which ceremonies. Private households wishing to make their own cheongju required permission, a restriction that lasted until the late Joseon period. The city of Cheongju in North Chungcheong Province shares the same characters, though its connection to winemaking is debated by local historians.

Japanese colonial policies between 1916 and 1945 restricted home brewing across Korea, pushing production into licensed breweries and effectively ending most regional variation in cheongju styles. After independence in 1945, the brewing industry rebuilt slowly. Commercial cheongju today is produced primarily in the Chungcheong region under brand names such as Chung-ha and Bek Se Ju. It remains a cooking wine in many households, but at traditional ceremonies it is poured into bronze cups and offered before any other food.