1/3cupseltzer(or sprite, if you like things sweeter)
1shot of coconut rum
Run a wedge of lime along the rim of the glass. Dip the rim of the glass into a bowl with coconut flakes.
Add the mint leaves to a glass, and muddle them to release their juices. If you don't have a mojito muddler, you can use a fork to mash up the mint leaves. Add lime wedges to the glass and muddle them too, making sure to squeeze both the pulp and the skin to release lime juice and lime oils from the skin.
Add one tablespoon of agave (or more to taste). Use the muddler to swirl everything together. If you're using sugar, crush the sugar with the muddler so that it dissolves in the lime juice.
Add the ice cubes, rum, and seltzer. Insert a fancy straw, give it a swirl, and enjoy!
You may substitute simple syrup or a tablespoon of sugar for the agave syrup, or skip it altogether and use Sprite to sweeten your mojito.