The Lucien Gaudin
makes 1 drink

1 ounce gin (we prefer the classic Plymouth)
1/2 ounce Campari
1/2 ounce Cointreau (or triple sec)
1/2 ounce dry vermouth

Mix all ingredients with ice. Mix with a swift up and down motion of the wrist. Pause, then mix again. Strain and pour into a chilled cocktail glass. An orange twist is nice, but not necessary.