- 1 1/2 ounces Basil-Fennel Syrup
- 1 1/2 ounces lemon juice
- 1/2 ounce lime juice
- club soda
- fennel fronds, for garnish
- In a cocktail shaker, shake syrup and juices with 3 cubes ice. Strain into a highball over crushed ice. Top with club soda and garnish with fennel fronds.