Scott,

I also found some infos on the net about persimmon seeds usage: "For hundreds of years, the common persimmon, or Diospyros virginiana L., has been used as a food source. Native Americans ate the ripe fruit right off the tree, or dried it, or made breads, jams, and jellies with it. They also made a beer-like drink from it, and roasted the seeds for flour. During the Civil War, persimmon seeds were dried, roasted, and ground into a coffee substitute, and the leaves were used for tea. During hard times, the persimmon has been used as a survival food."
I will try to roast some seeds next fall and see how good the persimmon coffee taste like.

Tony

I would eat those type of seeds by frying or baking them in coconut or olive oil.

The coffee substitute seems like it must have been common enough not too long ago, because I've heard about it multiple times. I know friends of mine have made it and recommend it. I'm not sure how regularly they make it, though. I also know there's another vendor at the local farmers' market that sells persimmon puddings (among other baked goods), and I overheard that she saves her seeds for a customer that requested them to use for a coffee substitute. Those are the only specific accounts I can recall, but I've heard others, too.

You might want to check out the website Eat the Weeds if you haven't already.

My korean wife throws them away.

Of course that's a sample of 1 out of some 25mm Koreans