A sophisticated classic from the 1870s
Use ½ oz sweet vermouth and ½ oz dry vermouth for a lighter, more complex flavor.
Replace sweet vermouth entirely with dry vermouth and garnish with a lemon twist.
Substitute Averna amaro for the sweet vermouth for a richer, more bitter profile.
Use quality sweet vermouth like Carpano Antica Formula or Cocchi Vermouth di Torino. Store it in the refrigerator after opening.
Stirring keeps the drink silky and clear. Shaking would make it cloudy and overly diluted.