Stir all ingredients with ice and strain in to a cocktail glass. Garnish with a Maraschino cherry and a lemon zest twist.
This is effectively the same as Savoy's Tuxedo #2 (but see note below). PDT has 2 Plymouth Gin, 1.5 Dolin Dry, .25 Luxardo Maraschino, 2 dashes orange bitters.
Harry Johnson's Bartender's Manual, pg 267