About 10 days after carbon dioxide is added, Nihon-shu moromi is pressed to take out sake and this sake is added with Nihon-shu yeast and is fermented, then, the carbon dioxide produced is dissolved as it is at a low temperature, and the sake is shipped.
炭酸ガスを入れてから十日ほど経ったときに日本酒醪（もろみ）をしぼり、もう一度日本酒酵母を入れて発酵させ、出てくる炭酸ガスを低温でそのまま溶存させて出荷する。