How to make the cocktail Ruby

Name: Ruby recipe
Prep time: 3 min
Total time: 5 min
Yield: 1 cocktail
Cuisine: USA
Ingredients: 45 ml vodka; 25 ml st-germain elderflower liqueur; 15 ml aperol; 20 ml grapefruit juice; 20 ml fresh lemon juice; 1 egg white