Add blueberries and basil leaves to the cocktail shaker.
Muddle gently to release the oils and juices.
Pour in vodka, lemon juice, and simple syrup.
Fill the shaker with ice and shake for 10-15 seconds.
Fill a Collins glass with fresh ice.
Double strain the mixture into the glass.
Top with club soda and stir gently.
Garnish with fresh blueberries and a basil sprig.
Notes
Store-bought simple syrup works well, but making it at home is easy. Mix equal parts sugar and water in a pan, heat until dissolved, then cool.Fresh ingredients make a big difference. Use ripe blueberries and bright green basil leaves.This recipe serves one person. Double or triple the amounts to make a pitcher for parties.The drink can be made non-alcoholic by replacing vodka with extra club soda.