This is basically a giant, boozy version of an after-dinner mint. There’s a lot of room to play around with the ratios if you want to put your own spin on it.
Since it’s named for a green insect, light crème de cacao and green crème de menthe are usually called for here. That said, any other mint liqueur will do just fine, including the clear ones.
Shake with ice and strain into a chilled cocktail glass.