As a total Non-Alcoholic I can make no comments at all about the quality of Jack. Having lived no further away than around 12 miles since Jan of 1947 though I do know the man's name & a lot of the history of the company. That was just short of being a Required subject in the Moore County school systems:
I do know it has a good bit of worldwide fame & has been used by many Celebrities. My understanding is the only difference between it & Bourbon is that the "TN Whiskey" is mellowed by passing through the charcoal filtration.
