Blackberry Sorbet

"Blackberries and other berry varieties are fragile and must be handled with care. Rinse them gently under cool water, discarding any that show signs of spoiling. Do not allow the berries to soak in the water for any amount of time, or they will absorb moisture and turn mushy. Spread the berries in a single layer on a double thickness of paper towels to drain. Boysenberries and loganberries are blackberry hybrids that can also be used for this sorbet. If you decide to substitute raspberries for the blackberries, handle them even more gently...."