In a shaker muddle strawberries with mint leaves and 2 cubes ice. Add rum, lime juice and simple syrup. Shake 30 seconds. Pour into a glass filled with ice. Top with club soda.
Mint sprig and whole strawberry for garnish
For Simple Syrup
Boil ½ cup water and 1 cup granulated sugar for 3 minutes. Cool. Keep refrigerated up to 2 weeks.