Tennessee whiskey is a type of American whiskey. This whiskey is generally similar to bourbon, in that it is composed of a mash of at least 51% corn (maize) and is aged in new, charred oak barrels, typically for four or more years.
But unlike Bourbon, Tennessee whiskey undergoes a filtering stage called the Lincoln County Process, in which the whiskey is filtered through a thick layer of maple charcoal before it is put into casks for aging. This step gives the whiskey a distinctive flavor. The process itself is named for Lincoln County, Tennessee, which is where the Jack Daniel's distillery was originally located. In 1871, the Jack Daniel's distillery, and the surrounding area became part of the newly created Moore County.
Presently, there are only two brands of Tennessee whiskey on the market: Jack Daniel's and George Dickel.
Tennessee Whiskey is also a song by country singer George Jones. The song says the woman who saved him from his addiction to the bottle is, "As smooth as Tennessee Whiskey"

See also

Bourbon whiskey
Corn whiskey
Moonshine
distillation
American Whiskey Trail