I got a little berry crazy at the farmers market - so cheap and delicious this time of year - so I decided to attempt jam. I made a batch of blueberry and of raspberry with no pectin. After a bit of research I attempted to make my own “pectin” out of apple peel, not sure how much it helped but my jam is nice and thick. I might try a cup less of sugar next time to see if  I can get away with it.