The new Esquire & Jefferson's Manhattan: Barrel Finished Cocktail was conceptualized in 2013 by Esquire's Editor-in-Chief David Granger and Jefferson's Bourbon founder Trey Zoeller, in an effort to provide bourbon enthusiasts with a barrel-finished bottled cocktail that enhances the experience of enjoying a classic. In search of delicious, oaky notes and a well-balanced flavor profile, Granger and Zoeller (aided by various Esquire staffers) tested dozens of recipes together until they narrowed down the options to just three recipes. Those three options were then aged for 90 days in bourbon barrels until just one stood out as a superior Manhattan. The finished product is comprised of six-year-old bourbon - 125 proof cut down to 82.3 - both sweet and dry vermouth, and barrel-aged, spiced cherry bitters. Enjoy it as you would any Manhattan: on the rocks or stirred and strained over ice.