2 oz of ginger liqueur
1/2 oz of campari
1/2 oz of Maraschino liqueur (or cherry liqueur)
1/2 oz of Lime Juice
2 dash of rhubarb bitters
1 dash of Tonic water
Shake and strain over ice into a highball glass. Top with Fever-Tree Indian Tonic Water. Garnish with fresh mint, sage, or rosemary sprig.