Instructions
- Fill a cocktail shaker with ice.
- Add 2 ounces of Scotch whisky, 1 ounce of sweet vermouth, and 0.5 ounces of fresh lemon juice to the shaker.
- Shake well until chilled.
- Strain the mixture into a highball glass filled with ice.
- Top with soda water to taste.
- Garnish with a lemon twist.