Key lime pie mojito        6 fresh mint leaves      1 tablespoon granulated sugar, or to taste      1/2 lime, cut into 2 wedges      3/4 cup ice cubes      1 ounce Marti Mojito      1 ounce Ke Ke Beach Key Lime Cream Liqueur      6 ounces club soda      1 sprig fresh mint for garnish (optional)