For this recipe you will need:
3 cups (packed) fresh mint leaves
Reserve 6 mint leaves for garnish. Place remaining mint leaves in medium bowl. Add sugar. Mash with wooden spoon until mint is aromatic and oils are released. Add rum and lime juice and stir until sugar dissolves. Strain mixture into pitcher.
Add club soda to pitcher; gently stir. Fill each of 6 glasses with 1 cup crushed ice. Pour mojito over and garnish each glass with 1 mint leaf.