If you do not enjoy the seeds in blackberry pie, then try removing them with a sieve. A mesh sieve will catch most of the seeds, and allow the rest of the pulp to pass through. The sieve removes most of the blackberry seeds, and leaves behind the delicious juice and pulp of the blackberries. Remove seeds from blackberries for any blackberry desserts, jams or jellies to remove the gritty texture the seeds leave behind.
Wash the blackberries to remove dirt and debris. Place the blackberries in a large mixing bowl.
Mash the blackberries with a potato masher. Do this gently to prevent the juice and berries from spraying out of the bowl. Only mash a small amount of berries at a time. If you prefer, you can puree the blackberries in a food processor.
Place the mashed blackberry pulp into a sieve over a mixing bowl.
Push the puree through the sieve with a wooden spoon. Only add a small quantity of blackberries at a time. Rinse the sieve out after each batch of blackberry pulp to remove the caught seeds.