Add blueberries to the cocktail shaker and muddle until crushed.
Pour in the gin, lemon juice, and simple syrup.
Fill the shaker with ice and shake for 15 seconds.
Strain the mixture into a Collins glass filled with ice.
Top with club soda and stir gently.
Garnish with fresh blueberries and a lemon wheel.
Notes
The drink can be made sweeter by adding more simple syrup in 1/4 oz increments.Fresh blueberries work best, but frozen ones can be used in a pinch.This recipe makes one serving. To make multiple drinks, multiply the ingredients by the number of servings needed.Store any leftover blueberry-gin mixture in the fridge for up to 24 hours.