Rinse the dried sorrel under cool water. Bring the 6 cups of water to a boil. Add the sorrel, ginger, cinnamon, cloves, and orange peel, then turn off the heat. Cover and steep 15 to 20 minutes for a bright drink, or longer (even overnight in the fridge) for a deeper one. Strain out the solids. While the liquid is still warm, stir in the honey until it dissolves, then add the lime juice. Cool to room temperature, then chill until cold. Serve over plenty of ice. Top with a splash of sparkling water if you like it lighter. Keeps about 5 days, covered, in the fridge.