title: Cloysters
garnish: Grapefruit zest twist
recipe: SHAKE all ingredients with ice & fine strain into chilled glass.
ingredients: [['6 cl', 'Rutte Dry Gin'], ['1.5 cl', 'Yellow Chartreuse liqueur'], ['1.5 cl', 'Grapefruit juice (pink)'], ['0.75 cl', 'Lemon juice (freshly squeezed)'], ['0.5 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup)'], ['1 dash', "Bob's Grapefruit Bitters (optional)"], ['0.75 cl', 'Chilled water (omit if using wet ice)']]