This past weekend myself and wee Gracie did the first pick of these thornless Balckberries in the back garden, and a wee bit of jam was made. I find the jam recipes on Allotment.org.uk a great resource...and I followed the chat about adding an apple into the pot to add natural pectin...and it turned out a treat!
My next batch I'm gonna try to replace the sugar with natural fruit juice...as per Caitriona from Wholesome Irelands suggestion, maybe next weekend I'll have more blackberries....