However, from wartime until the period of occupation by the United States, there was a lack of rice, the ingredient for Awamori, while there was a surplus of brown sugar which could not be shipped out to Japan's mainland and therefore people began to produce more kokutoshu.
だが、戦間期から戦後のアメリカ占領時代にかけ、米不足で泡盛の原料に事欠く一方、黒砂糖は日本本土に移出できず余剰だったことから黒糖酒が多く作られるようになった。