2 oz Breaking & Entering American Whiskey
3/4 oz fresh lemon juice
1/2 oz simple syrup
1/2 oz egg white
Angostura Bitters
Add all ingredients to a shaker and dry shake (no ice) for 30 seconds until frothy. Add ice to shaker and shake again for approximately 15 seconds. Serve in a coupe without ice, garnished with a few dashes of Angostura.