The Finance Ministry at that time specially admitted the production of shochu made from brown sugar in the jurisdiction of the Oshima tax office of Kumamoto Regional Taxation Bureau on condition of using malted rice as part of its measures to promote the Amami island chain.
当時の大蔵省は奄美諸島の振興策の一環として、米こうじ使用を条件に、熊本国税局大島税務署の管轄区域（奄美諸島）に限って黒糖原料の焼酎製造を特認した。