From my understanding of reports that I've read, soak the acorns for at least a week (save the water), then roast them, and grind them to flour. Add water and bake. Most have a strong taste that takes some getting used to but jam on top of them helps a great deal. Read the book-"My Side of the Mountain".

About the water. Save it and use it to soak hides in before scraping the fat and meat off. Then flip them over and scrape the hair off. This I have done with squirrel hides as a boy and it works great!!!