Columbo
Lemon zest twist
STIR all ingredients with ice and strain into chilled glass.

Special ingredient #1: Homemade Sicilian lemon cordial
[['5 cl', 'Bacardi Carta Blanca light rum'], ['1.5 cl', '*Special ingredient #1 (see above)'], ['1 cl', 'Americano Bianco'], ['1 dash', 'Angostura Aromatic Bitters']]
[['5 cl', 'white rum'], ['1.5 cl', '*special ingredient #1'], ['1 cl', 'americano bianco'], ['1 dash', 'angostura']]