title: Princeton
garnish: Orange zest twist
recipe: STIR all ingredients with ice and strain into chilled glass.
ingredients: [['6 cl', 'Portobello Old Tom gin'], ['1.5 cl', 'Tawny port'], ['0.5 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup) (optional)'], ['3 dash', 'Orange Bitters by Angostura'], ['1 cl', 'Chilled water']]