Step 1.
- In a shaker, combine the gin, elderflower liqueur, fresh lemon juice, and simple syrup.
Step 2.
- Add fresh basil and mint leaves to the shaker and gently muddle to release their flavors.
Step 3.
- Fill the shaker with ice and shake well until chilled.
Step 4.
- Strain the mixture into a highball glass filled with ice.
Step 5.
- Top with soda water and stir gently to combine.
Step 6.
- Garnish with fresh herb sprigs and a lemon wheel.