At first the Japanese monopoly divided its rice wine into three numbered grades. Later, Grade 2 rice wine (20.5 % alcohol content) was renamed Red Label. (This moniker carried over to the post-colonial era, because postwar rice wine with this level of alcohol, though not actually named "Red Label," still had a red colored label.)
日本人專賣推出的米酒原先分為米酒第一、第二、第三號三種等級，後來將二號米酒（二十・五度）改名為「赤標米酒」，也就是紅標米酒。