I thought, well that'll keep us going a long time....wrongo! Here's what was left:
Here's the empty boxes from the fruit:
And finally, here's the finished jam...12 jars! I had a bit of bother with this though. I thought I'd try just adding red currants to the blackberries as red currants are high in pectin (blackberries are low in pectin) but after what seemed like hours the jam still wasn't setting (using the old 'saucer in the fridge trick' for checking). So I then started adding lemon juice and eventually after several doses it started to set. By this point it had also turned very dark and the fruit had broken up. It has a Very intense flavour too. Anyway here it is, probably not one of my best, I think I do jellies better. I suspect I may have now overdone the set too and it'll end up rock hard.....we'll see!