Step 1.
- Muddle 5-6 fresh blackberries in a shaker.
Step 2.
- Add 2 oz vodka, 1 oz lemon juice, and 1 oz simple syrup to the shaker.
Step 3.
- Fill the shaker with ice and shake well for about 15 seconds.
Step 4.
- Strain the mixture into a highball glass filled with ice.
Step 5.
- Top with club soda and gently stir to combine.
Step 6.
- Garnish with fresh blackberries and a lemon slice.