Sake n. : Final cause; end; purpose of obtaining; cause; motive; reason; interest; concern; account; regard or respect; -- used chiefly in such phrases as, for the sake of, for his sake, for man's sake, for mercy's sake, and the like; as, to commit crime for the sake of gain; to go abroad for the sake of one's health.

Example:
How long does an open bottle of Sake last?

Taxonomy
sake, rice, alcohol, mash, flavors, shu, Japan, kōji, fermentation, sugar, starter, sake breweries, government, wine, cups, sake brewery, steamed rice, starch.

Defination from the web:
sake is made through a brewing process more like that of beer. ... Additionally, alcohol content also differs between sake, wine, and beer. ...