01 - Fill a copper mug or tall glass with ice cubes.
02 - Pour the fresh lime juice over the ice.
03 - Add ginger beer and club soda; stir gently to combine.
04 - Slap mint leaves between palms to release aromatic oils, then add to drink.
05 - Finish with lime wedge and fresh ginger slice if desired.
06 - Serve immediately while chilled.