"Tennessee whiskey is filtered through sugar maple charcoal in large wooden vats prior to aging, unlike the process used to make Kentucky bourbon.[9] Tennessee whiskey is not bourbon whiskey, as defined by Title 27 of the Code of Federal Regulations, Chapter 1, Part 5, Section 5.22.[10] However Tennessee whiskey is defined as a bourbon under terms of the North American Free Trade Agreement"
http://en.wikipedia.org/wiki/Tennessee_whiskey
Source(s):
http://en.wikipedia.org/wiki/Bourbon_whiskey
http://en.wikipedia.org/wiki/Tennessee_whiskey
http://www.jackdaniels.com/GentlemanJack/tasting.aspx
3 yrs ago / Gossow86