Blueberry Basil Cocktail Recipe

Blueberry Basil Cocktail Recipe : ¼ cup (60 ml) blueberries 5 basil leaves 2 oz gin ½ oz creme de cassis 1 oz fresh lemon juice ½ oz simple syrup (recipe below) 3 ice cubes and crushed ice 3 blueberries on pick and basil leaf.