This year, my Coe’s Golden Drop has been a big disappointment. It’s had so many early drops. I could not figure out why. The fruit are semi hard and greenish. I let them sit on a counter for over a week. Most have turned yellowish but the fresh eating quality is poor.
Any jam recipe will do. You also can try to do this: pit the plums, put them in the pot, add about 1/4 to 1/2 of sugar (by weight) and shake well. Let it sit until juice comes out. Now pack them in small freezer bags dividing the juice equally. Freeze and enjoy in winter.
That happened to me one year with my Italian prune plums. I made jam. The tasteless plum turned into tasteless jam. It was a huge waste of time as I too had pounds of them. They will not taste better cooked. Try making one fruit tart for a taste test. A tart might be the way to go for at least a few of them.
My concern is what Mrs. G stated that it would not come out any good. Will have to consult my chef to see what he wants to do with them. So many lbs. It’s be so sad if I could not make good use of them.
Try a small batch first - if it comes out good, continue. But if you worry about it is too much - I can buy some from you. Or barter - on green peppers .
Being on the green side they will have a lot of pectin and jell well. Maybe blend them with something, especially something that doesn’t jell well. Maybe orange…