Instructions
- In a highball glass, muddle the fresh mint leaves and lime wedges together gently to release the mint oils and lime juice.
- Add the granulated sugar and muddle further until well combined.
- Fill the glass with ice cubes.
- Pour in the white rum and top with champagne, stirring gently to mix the ingredients without losing carbonation.
- Garnish with a fresh mint sprig and a lime wheel before serving.