How to make the cocktail Boston Sour

Name: Boston Sour recipe
Prep time: 2 min
Total time: 4 min
Yield: 1 cocktail
Cuisine: USA
Ingredients: 45 ml bourbon; 30 ml fresh lemon juice; 20 ml sugar syrup; 1 egg white

The Boston Sour is a tart and refreshing cocktail, a twist on the classic Whiskey Sour. It's known for its balanced mix of sweet, sour, and slightly bitter flavors.