Premium Bonded special Bourbon.This bourbon contains all the pride of its 200 year history.Originated by Jacob Beam in 1795, it is the product of six generations of distillers. Made from the highest quality ingredients, Jim Beam is the worlds finest bourbon. To drink Jim Beam is not only to taste its full bourbon character, but its rich American heritage. Until the 1950s, bottled-in-bond bourbon (also called bonded bourbon) was virtually the only kind available. Though the term refers to bonded warehouses and the law that regulates them, in todays lexicon it describes 100-proof bourbon (50 percent alcohol by volume), the way all bourbon used to be. 50% alc./vol.Until the 1950s, bottled-in-bond bourbon (also called bonded bourbon) was virtually the only kind available. Though the term refers to bonded warehouses and the law that regulates them, in todays lexicon it describes 100-proof bourbon (50 percent alcohol by volume), the way all bourbon used to be. 50% alc./vol.