Gin Sour (lemon)

With egg white:

1. Add all ingredients into a cocktail shaker and dry shake.

2. Add ice and shake again until chilled.

3. Double-strain into a coupe.

4. Garnish with drops of Angostura bitters.

Without egg white:

1. Pour all ingredients into a cocktail shaker with ice.

2. Shake until chilled.

3. Strain into a coupe.

4. Garnish with a lemon wheel.