Serve in

How to make:

Whisk the white of one egg with two teaspoons of sugar until stiff peaks form. Add two heaped tablespoons of the resulting meringue to a shaker. Add all other ingredients and dry shake for at least a minute.
Add ice and and wet shake for at least another minute. Strain into glass, add one further heaped tablespoon of meringue to glass. Blowtorch the meringue to caramelise.