This blog is written by author Sachiko who is not a native speaker of English, so it may be hard to read. It is translated from the summary of Japanese page;

Sake “Junmai Daiginjo Chokaisan” (made by Tenju Shuzo, Yurihonjo city)

It is a Japanese rice wine made by the pure underground water of beautiful Mt. Chokai in Akita.

This brand is said to be good with a wine grass as well as sake cup.