The Kir Royale is a champagne version of blanc-cassis, a white wine and blackcurrant liqueur cocktail. The classic version Kir Royale is simply champagne with a splash of Creme de Cassis, a black current liqueur, though there are now many variations out there for the adventurous palate. I've often done this with Chambord in place of the Creme de Cassis.
Please Drink Responsibly.
Updated 11-2016