01 - Gently muddle the watermelon chunks and basil leaves at the bottom of a sturdy glass to release juices and aroma.
02 - Add lime juice and honey to the muddled mixture, and stir thoroughly until the honey is fully dissolved.
03 - Fill the glass with ice cubes, then pour sparkling water over the mixture until the glass is full.
04 - Garnish with an additional basil leaf. Serve immediately while chilled.