These ginkgo seeds are what you find while "hunting and gathering". Bring a plastic bag (or pop bottle works great) to put them in.
There are two ways to prepare as food:
"Dry fry". Put a layer of nuts in a covered frying pan with no grease, and maybe a little salt. Cook on high, shaking, for about 4 minutes. By then you'll see brown spots from almost burning. Turn the heat off and let sit another 10 minutes. A few of the fresh ones may pop open. That's it. Serve - you can crack with your teeth or a regular nutcracker. The texture is sort of soft and chewy, a little softer than a gummy bear. The taste is very mild and delicate. They are quite good..
Another way is boiling / roasting. I have not tried that completely, but here is the first test:
1. Wash the nuts as usual.
2. Crack the nuts. (Very easy with a regular nut cracker.)
3. (I think the normal thing to do next is to boil.) Put in bowl of salty water (1 cup water, 1 tsp salt). Microwave 3 min.
4. (I think the normal thing after boiling would be to string on a toothpick and roast over coals a minute or two.) I left them sitting 7 hrs. Then drained, sprinkled with salt, oven on high broil, on alum foil, 10 min.
Results: OK, but not as tasty as dry fry. Almost too plain.
(The only advantage of boiling is another site said that removes 99% of the ginkgo toxin. The seeds contain traces of the chemical that makes poison ivy blister skin (urushiol). I think I would rather just dry fry and not worry about it.)