Last 6 months several sake breweries had aged their sake undersea in south-Izu.Izumibashi sake brewery is one of them. June 10,2015 I visited south-Izu and watched pulling up the sakes aged undersea. It was fantastic invent.
Making Sake is from Growing Rice
Founded in 1857
Izumibashi Sake Brewery Co., Ltd.
Brewing Exclusively Junmai-shu
(c)1996 Izumibashi Sake Brewery Co., Ltd.