In a sturdy glass, add the mint leaves and 1 lime wedge.
Muddle the mint and lime together to release the mint oils and lime juice.
Add 2 more lime wedges and the sugar; muddle again to release more lime juice.
Fill the glass with ice cubes.
Pour the white rum over the ice.
Top with club soda.
Stir gently to combine all the ingredients.
Taste and adjust sweetness by adding more sugar if desired.
Garnish with a sprig of mint and a lime wedge.
Serve immediately and enjoy your refreshing Mojito!