I am so happy to have found this thread (!) as I am interested in the use of wild plum pits too. I have a pile of American plum pits, well-dried, that I have been nibbling one or two at a time, but I think it may be safest to grind and heat (boil or bake) them too.
Questions for some of you, if you would be so kind:
Rebecca -- Are the "lumpy heavy pasta" bits also made with bitter apricot flour? I have been watching YouTube videos about making prapu. They seem to use sweet apricot kernels, which I guess would make sense since you don't have to cook them for so long. But the "pasta" also appears to be made with apricot flour, which intrigues me.
Dr. Redhawk -- Is there anything more you might be willing to share about how to make the spread from wild plum pits? Does one grind and boil them? Do you happen to know the species of plum? I read a historical account from Post Oak Jim of Comanche people using wild plum pits, but yours is the only other account I have read. I nearly jumped out of my seat.
About me: I am very interested in wild food, and am writing a book featuring 36-40 plants. I am hoping to share some good information about eating wild plum pits, and discuss safety concerns for all stone fruit pits.
Most sincerely,
Erica