After researching how to make bitter tea milder, the tea leaf fibers were softened by steaming for a longer period of time to successfully produce a green tea from which the bitter taste had been eliminated.
渋いお茶をいかにしてまろやかなお茶にするかを研究した結果、蒸し時間を長くすることによって、茶葉の繊維を柔らかくし、渋味を取り去った緑茶を作る事に成功した。