Combine fresh mint leaves, rum, lime juice, and honey in a cocktail shaker. *
Muddle the mixture gently with a wooden spoon, until minty flavors are released.
Add ice to the cocktail shaker, cover, and vigorously shake for 15 seconds, or until chilled.
Strain the mixture into a tall glass filled with ice, leaving at least an inch at the top of the glass.
Top off the glass with club soda or sparkling mineral water.
Garnished with lots of extra fresh mint and lime, if desired.
Notes
* If you don’t have a cocktail shaker, or just don’t want to use one, simply muddle the leaves and mix everything together right in the serving glass. It’ll taste the same and you’ll have less dishes to wash!