Sake that has been kept in a wooden castk. barreled sake.
In Japanese culture ,the action of breaking the lid of a sake barrel in celebration.during celebrations in Japan ,the action of displaying pilled caskes of sake.as that action we call ‘Kagami biraki’ !!
Casks became a mean to transport sake since the Azuchimomoyama period.
It is a fragrance of wood used for a cask such as Japanese ceder that contains the sake.