Nathan's Old Fashioned
Orange zest twist
Short STIR all ingredients (should be served "warm") with ice and strain into ice-filled glass.
[['6 cl', 'Bourbon whiskey'], ['1.5 cl', "'Simple' sugar syrup (1 sugar to 1 water)"], ['2 dash', 'Angostura Aromatic Bitters']]
[['6 cl', 'bourbon whiskey'], ['1.5 cl', 'sugar syrup'], ['2 dash', 'angostura']]