What is the oldest tree food known to man and how long was it known?
I need to find information about the oldest tree food known to man from credible sources that discovered from analyzing the ages of trees. I am getting conflicted information on the Internet that it is the Date palm tree or the Walnut tree or Fig Tree or Olive Tree but i can’t find credible sources that would confirm either one. The sources must come from real professionals like archeologists and/or researchers from research or government institutions. Sources cannot come from blogs, guesses, dr Oz or sites trying to sell products.