Found this on Saveur.com and this is the backstory: This recipe, developed by Nitehawk Cinema's Beverage Director Jen Marshall, was inspired by the Oscar-nominated film Hugo. The magical sophistication of elderflower, citrus, and green chartreuse mirrors Hugo's and Isabella's enchanting quest through 1930's Paris.
If you are a classic Martini fan, enjoy Green Chartreuse, or like cocktails like a White Lady, I think you will really enjoy this.
1 1/2 oz gin
1 oz St. Germain
3/4 oz lime juice
3/4 oz Green Chartreuse
dash of orange bitters
Combine all ingredients in a large glass filled with ice. Stir thoroughly and strain the mixture into a coupe. Garnish with a lime twist.