Kirei Muroka Nama Genshu Go Dan Shikomi Hachiku "Eighty Nine"

From the importer Fifth Taste:

Kirei Shuzo's Toji, Masahiro Nishigaki, brews exceptional sake with depth and complexity by making very strong koji and fermenting it for a long time at low temperatures. "Hachiku" is made with a stunning 89% Koji and a five-stage fermentation process; resulting in high amounts of sweetness, umami, and acidity - all in perfect balance.