Step 1.
- Fill a shaker with ice.
Step 2.
- Add 2 oz of Scotch whisky and 1 oz of fresh lemon juice to the shaker.
Step 3.
- Add 0.5 oz of simple syrup to balance the flavors.
Step 4.
- Shake well until chilled.
Step 5.
- Strain the mixture into a highball glass filled with ice.
Step 6.
- Top off with soda water for a fizzy finish.
Step 7.
- Garnish with a lemon twist.