Buoyed by my success with my first ever batch of (blackcurrant) jam this year, I made a load of blackberry jam the other day, and it's pretty rubbish. I'm not sure what went wrong, but it's over-sweet and over-set. It's by no means inedible, just not all that nice. Is there anything I can do with it, other than either chucking it away or resigning myself to eating four jars of the stuff? DH suggested mixing it with apples in a crumble, which might work. Or any other ideas please?