Add raspberries and mint leaves to the shaker. Muddle gently to release the flavors.
Pour in vodka, lime juice, and simple syrup.
Fill the shaker with ice and shake for 10-12 seconds.
Strain the mixture into a Collins glass filled with fresh ice.
Top with club soda or sparkling water, leaving about 1/2 inch at the top.
Stir gently with a bar spoon to combine.
Garnish with fresh raspberries and a mint sprig.
Notes
The drink should be served right away to keep its fizzy texture.Fresh raspberries work best, but frozen ones can work in a pinch.Make it non-alcoholic by skipping the vodka and adding extra club soda.Store simple syrup in the fridge for up to 2 weeks.Pre-chill the glass for an extra cold drink.