0.5 oz Aperol
0.5 oz St. Germain Liqueur
0.5 oz Grand Marnier
1.5 oz Bombay Sapphire Gin
5 ice cubes
3-5 Drops Jamaican #2 Bitters
5 oz Izze Pink Grapefruit Soda.
Shake booze over ice, then strain over new ice, so you don’t wind up with ice shards in your drink.
Top with soda in a Collins glass and garnish with bitters.