What you need:
– Fresh lime juice
– Fresh mint
– Simple syrup
– Club soda or sparkling water
– Sprig of mint (for garnish)
– Lime wedge or lime slice (for garnish)
Add mint and lime juice to a highball glass. Gently muddle to release the oil in the mint leaves.
Add simple syrup. Fill the glass with ice cubes. Top with club soda to fill the glass and stir.
Garnish with a fresh mint sprig, and lime wedges or a lime slice.