David in Normandy wrote:
We've already had around 10 lb. It is a cultivated variety with huge
fruits but unfortunately they have a pith. Not so good for use in pies
and jams so spouse is freezing them at the moment then plans to make a
large batch of blackberry jelly - she can sieve out the pith that way.


I'm failing to comprehend how blackberries can havea pith.