In addition, Nagano Sake Brewery Co. Ltd insisted that 'we had continued sake brewing without any interruption, even a year, since the Genroku era (1688 to 1703) and we strongly opposed the method of sanzoshu widespread thoroughly in the postwar period because "we could not admit others which violate the technique of seishu," and kept brewing junmaishu.'
また長野銘醸によれば「元禄の時代より1年たりとも休む事もなく酒造りを継続し、戦後全面的に三倍醸造法が普及する中で、『清酒の技術を冒濱するようなもんはみとめられん』と大反対し、純米酒を守り続け」たとしている。