Instructions
- Add Irish whiskey, fresh lemon juice, simple syrup, and egg white into a shaker without ice.
- Dry shake vigorously for about 15 seconds to emulsify the egg white.
- Add ice to the shaker and shake again for another 15-20 seconds to chill.
- Strain into a chilled coupe glass.
- Garnish with a few drops of Angostura bitters on top of the foam and a lemon twist.