Daiginjoshu is a seishu which is produced with rice with a polishing ratio of fifty percent or lower, malted rice and water and produced with special care and for which fermentation is carried out at a lower temperature spending a longer time compared to ginjoshu.
大吟醸酒とは精米歩合50%以下の白米、米麹および水を原料とし、吟味して製造した清酒で、吟醸酒よりさらに徹底して低温長期発酵する。