Hmmmm..... Sorry, Charlie! Seems like you've got some sour plums on your hands there!
Alternatively and much easier, using one jar at a time, I would empty a jar into a saucepan and add about 1/4 cup of sugar (taste the stuff to see if you need more, which I would doubt), bring it to a slow boil as above and return to a steralized jar to be kept in the fridge for no more than a couple of weeks.
++++++++++++++++++++++++++++++++++++++++++++++
Yes, I will take the short way, One jar at a time. I still have 2 packages, about 8 cups, to can. I've given up on the crabapple juice, although I did use it in the first batch. I may try a batch of freezer jam. I did some strawberries as freezer jam and it was GREAT!
I'm eaithg out of a jar that I didn't process. Once you get over the inital tartness it isn't too bad on pancakes.
Thanks for your coments!