I'll definitely try this, though first I need to get a stock pot large enough to handle 10 KG of fruit!
My last couple of windfalls have been apples, mostly winesaps, and I made apple butter both times.
Mine is heavily spiced, similar to mulled cider, and the apples were so sweet I never even added sugar, and both batches still came out perfect.
Far superior in taste than the store bought variety, and far healthier as well!