Black Walnut Manhattan
A whole fresh walnut
STIR all ingredients with ice and strain into chilled glass.
[['6 cl', 'Straight rye whiskey (100 proof / 50% alc./vol.)'], ['3 cl', 'Averna Amaro'], ['2 dash', 'Black walnut bitters']]
[['6 cl', 'rye whiskey'], ['3 cl', 'averna amaro'], ['2 dash', 'black walnut bitters']]