Place raspberries and mint leaves in the cocktail shaker.
Muddle gently until raspberries release their juice.
Add vodka, lemon juice, and simple syrup to the shaker.
Fill the shaker with ice and shake for 10-15 seconds.
Strain the mixture into a Collins glass filled with fresh ice.
Top with club soda and stir gently with a bar spoon.
Garnish with fresh raspberries and a sprig of mint.
Notes
The drink can be made non-alcoholic by replacing vodka with extra club soda.Store fresh raspberries in the refrigerator for up to 3 days before using.Make simple syrup ahead by mixing equal parts sugar and water in a saucepan. Heat until sugar dissolves, then cool and store in the fridge.For a stronger raspberry flavor, let muddled fruit sit in vodka for 30 minutes before mixing.