I heard that they use a sake called Kinmon-nishiki, which is made in Nagano Prefecture.
We drank while listening to the explanation of a sake taster at a place where we could compare drinks on the second floor of Yodobashi!
I found a liquor store while I was out.
I just had to order it!
Wakayama Prefecture's Kuro-gyu - not clear, colorless, unfiltered, raw sake!
It is very tasty!