- 1 teaspoon white sugar
- 1 tablespoon lime juice
- 1 sprig yerba buena (fresh mint)
- 2 fluid ounces sparkling water
- ice cubes
- 2 fluid ounces rum
- 2 fluid ounces champagne
- Mix sugar and lime juice in a glass; add mint and muddle until mint is broken down. Add sparkling water and ice cubes. Mix rum and champagne into the drink.