Muddle the sugar cube and bitters into a paste. Add everything else, then stir with ice and strain into a chilled, Edouard Absinthe-rinsed rocks glass. Twist a lemon peel over the surface of the drink and discard.
George T. Stagg is part of Buffalo Trace's acclaimed Antique Collection of American Whiskies. The rare, unfiltered, barrel-proof whiskey tops the charts at a whopping 70% ABV. —Don Lee, Winter 2007