In the region of Fujigoko or the area that has five lakes formed by eruptions of Mt. Fuji, Ide Brewery Co. is the one and only sake brewery. And we at Ide Brewery Co. use Mt. Fuji Spring Water as its 'Shikomi Mizu' or producing water for Sake. The feature of its water is its cleanliness and clearness, abundance minerals, the stable temperature between 12 degree Celsius and 15 degree Celsius. and tasty with well balanced minerals melted in it. Recently, it drew attention of its high content of vanadium.