At Shimazaki Brewery in Sukuwagawa City, Tochigi Prefecture, you can visit the underground cave. The brewery was converted from an underground factory that was originally built for Japan's military industry, giving it a unique atmosphere. Inside the cave, barrels, barrel storage, and equipment necessary for brewing are displayed, allowing you to feel the history of brewing. There are also explanations about the brewing process and Shimazaki Brewery's commitment, making it very interesting. Currently, about 100,000 bottles of sake are still sleeping in the cave!
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