Step 1.
- Muddle the basil leaves gently in a shaker to release their aroma.
Step 2.
- Add 2 oz of Scotch whisky, 0.75 oz of fresh lemon juice, and 0.5 oz of simple syrup to the shaker.
Step 3.
- Fill the shaker with ice and shake vigorously for about 15 seconds.
Step 4.
- Strain the mixture into a coupe glass.
Step 5.
- Garnish with a single basil leaf on top.