Rum Old Fashioned
Orange or lime zest twist
STIR all ingredients with ice and strain into ice-filled glass (preferably over a chunk of block ice).
[['5 cl', 'Havana Club 7yo rum'], ['1 cl', 'White overproof rum'], ['0.75 cl', "Difford's Falernum liqueur"], ['0.25 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup)'], ['1 dash', 'Angostura Aromatic Bitters']]
[['5 cl', 'amber rum'], ['1 cl', 'white rum'], ['0.75 cl', 'falernum liqueur'], ['0.25 cl', 'sugar syrup'], ['1 dash', 'angostura']]