What makes it Tennessee Whisky (ey)?  There are only two distilleries that are licensed to produce it and they both say it’s all about the slow filtering through charcoal (to remove “impurities”) that transforms bourbon into the good stuff, Tennessee whiskey.  We toured Jack Daniels and George Dickel distilleries.  Simple earthy smelling grains go to stinky sour mash on to a heady, sweet smelling liquor.  The two differ slightly on process since Dickel chills while they filter and Jack does not but the real difference is scale.  Jack Daniels has 83 multi story barrel aging warehouses as compared to the 8 single story of Dickel.  They both show lots of pride in what they make and how they do it.  It may take some serious taste testing to pick a best.