Update: we had a productive enough foraging season this year to convince a couple of our supporters to loan us enough money to buy a commercial-scale oil press. We have some 3500 lbs of nuts for oil stored (bitternut hickory and black [and some red] oak acorns) and have been producing hickory oil (and dialing in our processes) since last week. Hoping to get some decent amount of acorn oil pressed today.
Have been selling black walnuts (both pure nut meats and cracked and sifted sort-your-own), but haven't quite figured out our prep process to press oil from them. Still doing some experimenting there.
Hickory oil is a pretty big hit at the markets we've brought it to so far. Starting to feel out local restaurants to try to move more oil at a time (likely still at retail price).
The main push this year is to pay off our debt for the press so that next year we can run in the black. The progress feels good.