Ingredients

1 egg white 

1 1/2 ounces rum 

1 ounce Campari 

1/2 ounce sweet vermouth 

Lime slice 

Preparation

Place egg white in a shaker (with no ice); shake vigorously 30 seconds. Fill with ice, rum, Campari, and vermouth. Shake 30 seconds more. Strain into a glass filled with crushed ice; serve, with lime slice.