I do not believe Jack Daniels is a bourbon. I think it is a sour mash. Kentucky folks might get upset with the finest whiskey in the world being called a bourbon.
We had 35 Japanese pharmaceutical guys visit us in Knoxville a few years ago. The only word of English they knew was Jack Daniels and Dolly Parton.
If you ever get a chance, visit Lynchburg TN. The distillery is as ancient as they advertise it. I do not things have changed in the last 100 years. Smells good too
Paul E. Smith