Step 1.
- Fill a shaker with ice.
Step 2.
- Add gin, fresh lemon juice, simple syrup, and egg white (if using) to the shaker.
Step 3.
- Shake vigorously for about 15 seconds.
Step 4.
- Strain the mixture into a highball glass filled with ice.
Step 5.
- Top with club soda to taste.
Step 6.
- Garnish with a lemon wheel.