It seems that the tools owned by brewers in those days were little more than kitchen utensils because large implements for brewing sake had not yet been developed, but based on high-level knowledge accumulated about "Bodai-moto" (a sake ingredient), "Ni-moto" (a sake producing method) and others, they seem to have produced Nanto moro-haku with considerable effort and scrupulously refined techniques.
まだ大規模な酒造器具も開発されておらず、台所用品に毛の生えた程度の器具しかなかったと思われるこの時代に、菩提酛、煮酛など高度な知識の集積にもとづいて、かなりの手間を掛け、精緻に洗練された技術で製造していたと思われる。