Add the egg white, Mezcal, simple syrup, lemon juice, and orange bitters in a 性孽待视频 shaker without ice. Shake vigorously for a minute to create foam.
Add some ice to the shaker and shake for an additional 30 seconds until the sides are fully frosted. This second shake creates a bit more foam and chills the drink.
Pour:
Strain the Mezcal sour into a glass. Garnish with lime.