ケイ・ナーガ
I bought it at Yoshida Sake Shop in Ebisucho, Nagasaki City. This is the only place in Kyushu where it is sold.
When it is opened, it smells as if you are drinking Masu sake. The balance of sweetness, sourness, and umami is good, and it is easy to drink. It is also delicious.
Japanese>English