Gather all ingredients and tools.
In a cocktail shaker, add fresh mint leaves and muddle gently.
Pour in vodka, lime juice, and simple syrup.
Fill the shaker with ice and shake vigorously for 15 seconds.
Strain the mixture into a glass filled with ice.
Top with soda water for a refreshing finish.
Add cucumber slices and stir gently.
Garnish with lime wedges and mint sprigs.
Serve immediately and enjoy!