For a whiskey to qualify as bourbon, the law--by international agreement--stipulates that it must be made in the USA. It must be made from at least 51% and no more than 79% Indian corn, and aged for at least two years. (Most bourbon is aged for four years or more.) The barrels for aging can be made of any kind of new oak, charred on the inside. Nowadays all distillers use American White Oak, because it is porous enough to help the bourbon age well, but not so porous that it will allow barrels to leak. It must be distilled at no more than 160 proof (80% alcohol by volume). Nothing can be added at bottling to enhance flavor or sweetness or alter color. The other grains used to make bourbon, though not stipulated by law, are malted barley and either rye or wheat. Some Kentucky bourbon makers claim that the same limestone spring water that makes thoroughbred horses' bones strong gives bourbon whiskey its distinctive flavor. Kind of like that "it's the water" thing with Olympia beer.

Jack Daniel's is not a bourbon - it's a Tennessee Whiskey. Jack Daniel's is dripped slowly - drop-by-drop - through ten feet of firmly packed charcoal (made from hard sugar maple) before going into new charred oak barrels for aging. This special process gives Jack Daniel's Tennessee Whiskey its rare smoothness. It's this extra step - charcoal mellowing – that makes Jack Daniel's a Tennessee Whiskey.
American as apple pie and a testament to quality, tradition and passion, Jim Beam® is the best-selling brand of bourbon in the world. Seven generations of craftsmanship go into every bottle, along with corn, rye, barley malt, water, time and pride.

Jim Beam is a brand of bourbon whiskey. It is currently one of the best selling brands of bourbon in the world. Since 1795 (interrupted by Prohibition), seven generations of the Beam family have been involved in whiskey production. Their brand was given the name "Jim Beam" in 1933 in honor of James B. Beam, who rebuilt the business after Prohibition ended. The company produces several varieties of bourbon and whiskey, as well as food products that include bourbon as an ingredient.