I have just made my first ever batch of grape jelly from the fruit
growing on the vine in my garden. I followed the instructions that I
have been given and used a sugar thermometer to guage the setting
point but I am left with jars of syrupy liquid. What has gone wrong?
Is there anything I can do to make them set? I have loads more grapes
to use up so I want to get it right.

thanks

Frances