Muddle kumquats in the bottom of a mixing glass. Add Ketel One Oranje, elderflower liqueur, orange bitters and lemon juice and shake with ice. Strain into a Collins glass filled with ice. Top with club soda. Garnish with an orange slice.
All drink recipes within this site contain no more than 0.6 fl. oz. (14 grams) of alcohol per serving, equivalent to one standard U.S. drink. For more information on alcohol content, please visit http://www.drinkiq.com