Combine ¾ oz. Aperol, ¾ oz. elderflower liqueur, ¾ oz. fresh lime juice, ¾ oz. rhum agricole, and 9 drops Bittermens 'Elemakule Tiki Bitters in a shaker tin with ice.
Shake vigorously until well chilled, 10–15 seconds.
Strain into a chilled cocktail glass.
