Frozen Aquavit

Pour the aquavit, kirschwasser cherry brandy, lime juice, and sugar syrup into a cocktail shaker.

Add the egg white to the shaker with the other ingredients.

Fill the shaker with ice and shake vigorously for 10-15 seconds until the mixture is well chilled and frothy.

Strain the cocktail into a chilled coupe glass or serving vessel, pouring slowly to preserve the foam layer on top.

Serve immediately while the drink is ice-cold and the foam is still present on the surface.