bourbon - 2/oz, Carpano Dry Vermouth - 0.5/oz, Carpano Sweet Vermouth - 0.5/oz, orange peel - 1/slice, orange bitters - 2/dash
Stir bourbon, dry vermouth and sweet vermouth over ice until properly chilled, strain into cocktail glass, add dash of bitters and garnish with a twist or orange peel.
High quality vermouth like Carpano.