The formula for a fine whiskey scent calls for two ingredients: grain alcohol and (shocker) whiskey.
I used Jim Beam's 100 proof Bonded Kentucky Rye, because of its high alcohol content and tantalizing scent. The ratio calls for two-thirds parts grain alcohol to one-third parts whiskey.
The grain alcohol acts as a base of the cologne, while the whiskey supplies the scent. So easy, a dumb little baby could do it.