maple amaretto sour

• 100ml Amaretto   
• 50ml lemon juice   
• 40ml pure maple syrup (preferably golden colour for its delicate flavour)
• 30ml egg white 
• 3 dashes of Angostura bitters 
• lemon zest

Method

1. Pour all ingredients into a shaker.
2. Dry shake (shake without ice) to get a foam from the egg white.
3. Fill the shaker with ice and shake again until cold.
4. Strain the drink into a glass and garnish with lemon zest.