Factory Visit

Welcome to Yamasa soy sauce factory.

Yamasa's soy sauce factory is located in the center of Choshi, Chiba Prefecture, with its premises of about 230,000 square meters.
Yamasa soy sauce is produced for as long as several months in the spacious factory. Although you can freely visit any building and any process of soy sauce production by clicking, we recommend you to follow the manufacturing process.
fermentation and againpreparation for brewing process
pressingkoji production
pasteurizing and quality inspectioningredients
bottling and finishing