Traditionally made with equal parts gin, Green Chartreuse, maraschino liqueur, and lime juice, but like many others (when using a 40%-43% alc./vol. gin)...
Great cocktail. And resilient too! Ordered one at the Algonquin Hotel in NYC and it came in a rocks glass …over a block of ice! I was aghast. But, to my surprise, enjoyed it much … and ordered another!