A kir is a white wine and crème de cassis aperitif. A kir royale gets an upgrade with Champagne and is therefore my preferred version. “I will drink Champagne anytime, anywhere, with anyone,” was a famous saying of one of my wines instructors in cooking school. This is a recipe for fun or trouble, or (more likely) both. Since the forager’s pantry likely includes mysterious bottles of home-infused fruit liquors and syrups, instead of buying crème de cassis, break out your Elderberry Cordial for this classy and celebratory drink.