For example, led by Tetsuro TANAKA who was an Official Appraiser of the National Tax Administration Agency, some voluntary sake breweries from all over Japan organized Kenjokai (the study group of sake brewing) in 1953 in order to produce high quality sake as opposed to sanzoshu which was popular at that time.
たとえば昭和28年（1953年）国税庁の鑑定官であった田中哲朗を中心として、全国の有志酒蔵が、当時の時流であった三増酒に抗して品質の高い酒を造ろうと研醸会を結成している。