Brewing water and its source in the forest
In 1886, Shoji Nagai fell in love with the water flowing in Kawaba, a village of 3300 souls in Gunma prefecture. He soon opened a sake brewery. Today, the house owns a 50-hectare forest in order to supply itself with spring water. The sacred forest has been passed on and protected from generation to generation. The motto "Expressing the beauty of nature in Kawaba through our sake" defines the essence of sake in its water.
The brewing water is slowly filtered through the soil of Kawaba village over a period of several decades. It is a medium soft water (hardness 50 mg/l P H6.8), and slightly sweet, with a mineral aftertaste.