Step 1

Add all the ingredients to a cocktail shaker. Dry shake the ingredients vigorously, without ice, for 10 seconds to incorporate the egg white and aerate the cocktail.

Step 2

Fill the cocktail shaker with ice, cover, and shake vigorously for an additional 10 seconds—or until the sides of the shaker are frosty and cold.

Step 3

Fine-strain into a cocktail coupe. Using a dropper, add a few dashes of bitters to the top of the cocktail. With a toothpick, thin skewer, or cake-tester, draw a line through the bitters to create a design, if you like.

Step 4

Combine equal parts fresh passion fruit pulp (strained through a fine mesh sieve to remove seeds) and sugar in a saucepan. Heat until the sugar is dissolved and cool completely. Store in the fridge for up to 2 weeks.