- 10 fresh mint leaves
- 1 teaspoon white sugar
- 1 tablespoon warm water
- 1/2 cup crushed ice, or as needed
- 2 fluid ounces cognac
- 2 fluid ounces chilled dry sparkling wine, or as needed
- Place mint leaves in a tall cocktail glass. Add sugar and warm water; muddle gently. Add crushed ice. Pour in cognac; stir. Top with sparkling wine.