These bins were totally filled and I still have another load to grab from the community orchard. I had to pick the ones that were weighing down branches without the potential for growing well. They're not ripe yet but are usable and I didn't want to dump any I could save. I also have like 50kg of semi-ripe plums to pickle and turn into wine. The apple butter will go with some homemade bread.
I've never tried (or even eaten them). We just ended up with so many and with the pits I didn't want to try to use them for livestock. Searching for uses I found the pickled plums and a plum wine I really liked in Japan, so it's going to be an experiment with both. The trees are still so full of plums that they're sagging to the ground and we have another month to go before they're ripe.
Thanks for the reply, this is also the first year I do this, I have half a dozen trees, and other years they barley had any fruit. But this year they were quite productive so I made a few jars. Since you seem to have a lot of fruit, I hope you can experiment liberally and make good pickled plums and wine.