When I was young, I remember my grandmother making some kind of delicious plum jam concoction. It had walnuts in it, maybe some other fruit (pineapple? raisins?) and wasn’t called jam. She only made it the one year, but I remember loving it.

Cue to now. We have a plum tree giving us a bumper crop this year. I really want to recreate that jam-type thing Grandma made. The problem? I have no recipe and don’t know what it was called. I’ve been looking, and found there are a lot of different “jam...