Watermelon and Basil Martini

This summertime treat begins with 1.5 cups of diced ripe watermelon. Shake over ice with 7 freshly-torn basil leaves and 6 ounces of Juniper Green London Dry Gin and an ounce of gomme or simple syrup as a sweetener. Strain into a martini glass and garnish with a skewer of watermelon.