Add Egg White: Crack open an egg, separate the white from the yolk, and pour the white into the shaker (optional).
Add Bitters: Pour 2 dashes of Angostura bitters into the shaker.
Add Lime Juice: Measure and pour ¾ oz fresh lemon juice into the shaker.
Add Simple Syrup: Add ½ oz simple syrup to the mix.
Add Bourbon: Pour 2 oz Bourbon into the shaker.
Shake Well: Fill the shaker with ice. Close it well and shake the ingredients vigorously for about 15 seconds. If you’re not using egg white, go directly to step 7.
Dry Shake (only if using egg white): Open the shaker. Using the cocktail strainer, pour the liquid into the other tin and discard the ice. Close the shaker again and shake another time, for 15-20 seconds, without ice this time.
Prep glass: Fill an old fashioned glass with ice cubes.
Strain: Using the fine strainer, strain the mixture into the glass.
Garnish: Express the lemon zest on top of the glass (you can either discard it after or place it on the rim of the glass for an added orange touch) and add a cherry if you like.