Weddings and the surrounding celebrations simply call out for champagne. And this recipe certainly brings a modern colorful twist to a signature cocktail. The rhubarb-strawberry mix is easy to whip up in batches making it ideal for a big gathering. And with the vanilla and sugar balancing the tartness, it’s like a fruit salad before dinner or the perfect dessert complement. For flawless service, have the glasses ready with the mix in the bottom, and top with the champagne before serving.