Serve on the rocks by first pouring in the black liqueur, and then gently floating the white liqueur on the surface of the liquid. This makes the perfect layered drink, Irish Coffee-style, and you can garnish with white and dark chocolate pieces. Enjoy the richness of the white chocolate, and then a refined, deliciously bitter edge from the combination of Irish whiskey and coffee that next reaches the palate. Or pour together in a martini glass and garnish with coffee beans for an elegant, longer drink.