- 2 oz. Old Soul Bourbon
- ¾ oz. lemon juice, freshly squeezed
- ½ oz. simple syrup
- ½ oz. egg white (or sub aquafaba)
- Dash of Angostura bitters
Add bourbon, lemon juice, simple syrup and egg white, if using, to a shaker and dry-shake for 30 seconds without ice. Add ice and shake again until well-chilled. Strain into a coupe and garnish with 3 or 4 drops of Angostura bitters.