Combine ingredients, except Champagne, in a cocktail shaker.
Shake and pour in a wine glass over ice.
Top with Champagne.
Notes
For the Hibiscus strawberry syrup: Stir 1 oz. of The Perfect Purée Strawberry Puree, thawed, with 4 oz. hibiscus tea. Mixologist Cody Goldstein, @muddlingmemories, created this recipe.