Add all of the ingredients to a cocktail shaker without ice. Shake for 30 seconds. Add ice and shake for 30 seconds. Strain into a chilled coupe glass and top add an orange peel as garnish.
Notes
Use a rum you like as the flavor comes from it.
You can replace the lemon juice with lime juice if you prefer.
Chill the glass so it remains cold for longer.
Leave the egg white out if you are concerned about raw eggs.