Nathan's Arnaud (Parisian Nights)
Lemon zest twist (discarded).
STIR all ingredients with ice and strain into chilled glass.
[['3 cl', 'Tanqueray No. Ten Gin'], ['3 cl', 'Martini Extra Dry vermouth'], ['3 cl', 'Giffard Noir de Bourgogne Cassis']]
[['3 cl', 'gin'], ['3 cl', 'dry vermouth'], ['3 cl', 'giffard noir de bourgogne cassis']]