Tilly; it's quite easy. Just cover the backcurrants with water and bring to boil and simmer to soften the fruit (about 40 minutes). Sieve the fruit through a jelly bag (or old teatowel). For every pint of juice add 1lb of sugar and do just like with jam.
Thanks shoota, sweety. I want to eat them not drink them. It seems like a waste of vitamin C otherwise. Just topped and tailed half of them. Am now bored. Will do the rest later.
You don't need preserving sugar or a special pan - ordinary sugar, plus saucepan - the bigger the better. Do you not have a stash of old jam jars you can re-use?
I often use my pressure cooker pan as it's heavy, just make sure it's big enough so the jelly doesn't boil over. Just use ordinary granulated sugar i always do and use used jam jars or equivalent.