Using a fork, press the mint with the back of a fork to coat the inside of the glass and leave it in the glass.
Add the watermelon puree, cherry syrup, limejuice and rum.
tir well.
Top with ice.
Top-off the glass with sparkling water or club soda.
Add the sugar cane stirrer and lime wedge to the glass and serve.
Source:
Watermelon.org