Unlike scotch, the Irish malt is kilned over coal as opposed to peat. Finally, unlike the Scots, the Irish use unmalted barley, oats, and rye in their blend. A century later, the Jack Daniels name has become synonymous world-wide with fine Tennessee sipping whiskey. This spirit must subsequently be aged in new, charred oak barrels. This number will fluctuate a bit in each bottling.
Rye whiskies tend to be spicier and more assertive than their bourbon counterparts.
This type of whiskey will have subtle variations in both flavor and strength. These whiskies are chosen from casks in the center of the racking and receive more care, attention, and aging than a typical bourbon. For example, the master distiller, Booker Noe, will personally taste each cask of Booker's to decide if and when the spirit has fully matured.