Place 6 of the basil leaves in the palm of your hand and clap. Place the leaves in the base of a cocktail shaker and add the simple syrup and lime juice. Pummel the basil leaves with a muddler to release the oils. Add the gin to the shaker along with ice. Put the top on the cocktail shaker and shake. Using a strainer, pour the mixture into a glass.
Place the remaining basil leaf in your hand and clap. Garnish the cocktail with the basil leaf and serve.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.