Zatsuyo yosui (utility water)

Zatsuyo yosui (utility water) refers to water used in sake brewing mainly for washing equipment and for facilities such as boilers. This water is used for tasks not directly connected to the brewing process, but it is very important for keeping the brewery environment clean. Although the quality of utility water rarely affects the quality of the sake itself, proper management is essential. In sake making, cleaning and equipment maintenance contribute to preserving sake quality, so utility water is also drawn from a reliable source and handled with care.