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.