Water is slowly added to dry grain having a water content previously adjusted to 10% to 15% at a water addition rate of 0.5% to 2.0%/h, in order to provide a water content of 20% to 30%, and thereafter, the grain is placed into a tank, followed by tempering for 2 to 15 hours.미리 수분 10~15% 로 조정한 건조 곡립을, 수분 20~30% 의 범위가 되도록 0.5~2.0%/h 의 가수 속도로 완만한 가수를 행하고, 이 곡립을 탱크에 투입하여 2~15시간의 조질을 행한다.