Step 1.
- Juice half a medium-sized watermelon to obtain about 6 ounces of fresh watermelon juice.
Step 2.
- In a cocktail shaker, combine 2 ounces of elderflower liqueur with the watermelon juice.
Step 3.
- Add ice to the shaker and shake gently until chilled.
Step 4.
- Strain the mixture into a highball glass filled with ice.
Step 5.
- Top with club soda, about 3-4 ounces, to add a fizzy touch.
Step 6.
- Garnish with a slice of watermelon and a sprig of mint.