This is another of my recipes I tried over the course of the month, for September I got banana liqueur, creme de noyeaux and the x rated fusion liqueur but you'll see that recipe in a month. The grapefruit juice does add a whole new dimension of taste (was that hacky or what?) to this drink which gave it the robust flavor the last 2 "home" collections I've had have lacked. Of the 2 ingredients left I'd say the Jager served as the base ingredient.