Step 1.
- Muddle fresh basil leaves at the bottom of a cocktail shaker.
Step 2.
- Add gin, fresh lime juice, and simple syrup to the shaker.
Step 3.
- Fill the shaker with ice and shake well.
Step 4.
- Strain the mixture into a chilled cocktail glass.
Step 5.
- Garnish with a sprig of basil.