Marceau
Orange slice
SHAKE first 3 ingredients with ice and fine strain into chilled glass. TOP with splash soda and briefly stir.
[['3 cl', 'Grand Marnier or other cognac orange liqueur'], ['3 cl', 'Martini Extra Dry vermouth'], ['4.5 cl', 'Grapefruit juice (pink)'], ['4.5 cl', 'Thomas Henry Soda Water']]
[['3 cl', 'cognac'], ['3 cl', 'dry vermouth'], ['4.5 cl', 'grapefruit juice'], ['4.5 cl', 'soda water']]