1
Add the lime wedges and ginger simple syrup to a highball glass with a sturdy bottom. Muddle until the lime breaks down. Add the fresh mint leaves and lightly muddle a few times.
2
Pour in the white rum and add a handful of ice. Stir to both combine and chill. A bar spoon works well for this, but you can use a regular kitchen spoon if you don't have one.
3
Top with chilled club soda and gently stir to combine. You don't want to stir too forcefully, or you can lose that delightful carbonation.
4
Place the fresh mint sprig in the palm of your hand. Quickly clap over it to release its fragrance and garnish.