HEAVENSAKE products are produced in Japan using rice, water, kōji mold, and yeast. The brand applies a blending process in which different sake components are combined to achieve balance in aroma, flavor, and texture, adapting the assemblage method from Champagne production. Certain editions are presented in porcelain bottles produced by Arita Porcelain Lab. Collaborating breweries include Noguchi Naohiko Sake Institute in
Ishikawa Prefecture, Niizawa Brewery in
Miyagi Prefecture, Urakasumi Brewery in
Shiogama, and Dewazakura Brewery in
Yamagata Prefecture. Sake expert John Gauntner noted initial skepticism about using assemblage in sake production, which he later revised after tasting a HEAVENSAKE blend. == Products ==