Step 1.
- In a cocktail shaker, combine 2 oz of pisco, 1 oz of fresh lime juice, 3/4 oz of simple syrup, and 1 egg white.
Step 2.
- Dry shake (without ice) vigorously for about 10 seconds to create froth.
Step 3.
- Add ice to the shaker and shake again for another 10-15 seconds.
Step 4.
- Strain the mixture into a chilled cocktail glass.
Step 5.
- Dash a few drops of Angostura bitters on top for garnish. Optionally, add a lime wheel. Be careful not to disturb the foam while adding the garnish.