- 3 leaves fresh basil, divided
- 1 teaspoon cane sugar
- 1/2 cup ice cubes, or as needed
- 3 fluid ounces limoncello
- 3 fluid ounces soda water
- sea salt as needed
- Place 2 basil leaves and cane sugar in a cocktail shake; muddle together until basil is broken down. Add ice, limoncello, and soda water. Cover shaker and shake.
- Spread sea salt onto a shallow plate. Wet the rim of a glass with water and press rim into sea salt. Pour cocktail into glass and garnish with 1 basil leaf.