Prep Glass: Fill up an old fashioned glass with ice cubes to chill it.
Add Angostura Bitters: Add 2 dashes Angostura aromatic bitters to the shaker.
Add Egg White: If you're using it, add 1 egg white for frothiness.
Add Simple Syrup: Add ½ oz simple syrup to the mix.
Add Lemon Juice: Measure and pour 1 oz fresh lemon juice into the mix.
Add Vodka: Pour 1½ oz Vodka into the mix.
Shake Vigorously: Close the shaker and shake the mixture thoroughly.
Prep Shaker: Fill your cocktail shaker with ice cubes.
Shake again: Shake for about 15-20 seconds one more time.
Strain and Pour: Pour the mixture over fresh ice into the Old Fashioned glass or Coupe Glass using the strainer.
Garnish: Place a lemon slice or cherry into the glass for garnish.