Wedding Crasher
Lemon zest twist discarded & drop in a blackberry
STIR all ingredients with ice and strain into chilled glass.
[['4.5 cl', 'Straight rye whiskey (100 proof / 50% alc./vol.)'], ['2.25 cl', 'Rosso/rouge (sweet) vermouth'], ['1 dash', 'Angostura or other aromatic bitters'], ['1.5 cl', 'Crème de mûre (blackberry liqueur)']]
[['4.5 cl', 'rye whiskey'], ['2.25 cl', 'red vermouth'], ['1 dash', 'angostura'], ['1.5 cl', 'crème de mûre']]