American whiskey in the context of Tennessee whiskey

Bourbon whiskey (/ˈbɜːrbən/; also simply bourbon) is a barrel-aged American whiskey made primarily from corn (maize). The name derives from the French House of Bourbon, although the precise source of inspiration is uncertain; contenders include Bourbon County, Kentucky, and Bourbon Street in New Orleans, both of which are named after the House of Bourbon. The name bourbon might not have been used until the 1850s, and the association with Bourbon County was not evident until the 1870s.

Although bourbon may be made anywhere in the U.S., it is associated with the Southern United States, particularly Kentucky, through a history of advertising bourbon as a product of Kentucky with rural, Southern origins. Thanks to a market shift in the 1990s, it has also become a symbol of urbanization and sophistication, with a large consumer demographic belonging to the middle- to upper-class, including business and community leaders.

Grain whisky normally refers to any whisky made, at least in part, from grains other than malted barley. Frequently used grains include maize, wheat, and rye. Grain whiskies usually contain some malted barley to provide enzymes needed for mashing and are required to include it if they are produced in Ireland or Scotland. Whisky made only from malted barley is generally called "malt whisky" rather than grain whisky. Most American and Canadian whiskies are grain whiskies.