As far as I am aware they are eaten by wild animals, mostly squirrels and they are seeds to start new Oak Trees. I never new of anyone making a pie or jelly with them.
They are very nutritious but the high tannin content makes them unpalatable as-is, though some "sweet" varieties aren't too bad, or need only light processing.
Many American indian tribes subsisted on acorn meal made by leaching out the tannin, much as you have to remove the nasty toxic stuff from pokeweed by heating it up in water, rinsing it and doing it again. After removing the tannin the acorns meats lose their bitterness and are dried and ground fine.
You might want to look that up- by the time the government nationalizes everything and the socialists have had their way, we all might need to eat that stuff in some squirrel stew, too.
The tannin from oak acorns and bark was used to tan leather by settlers.
Acorns are very useful. If you cut a big burr oak acorn just right it makes a nifty shot glass for moonshine. Put eight of those cups together and a squirrel could wear them as a bra. Use some pvc pipe and an air compressor to fashion a giant acorn shooter and you have a "green" assault weapon... or go the low tech approach and just use them in a slingshot to keep dogs and liberals out of the garden.
Actually, Native Americans made a meal out of them. They are bitter but they had a way to make them edible.
As far as I am aware they are eaten by wild animals, mostly squirrels and they are seeds to start new Oak Trees. I never new of anyone making a pie or jelly with them.
Blacktail deer in CA eat them in the winter. Indians used to eat them and the Northwest Indians of Washington and Oregon used to put them in a hole in the ground and then pee on them, everyone in the tribe(males only)would pee on them. Then the children would take them and suck on them after the pee had evaporated, I understand it was for the salt in them!
The other Indians who used them for food would grind them up and soak them in water, rinse, then repeat until most of the bitterness was gone and then make a batter out of them for a bread like substance. This was all taught to me long ago in grammar schools in Northern CA when they still actually taught things that were not PC.