Their food was mainly a diet of wild Boar meat, Sheep, Deer with the food they grew on the farms and the berries and herbs they got from the bushes.
Over a hearth. They would have used pots, or baked meat and tubers (like potatos) with hot stones. This video gives you a good idea of ways prehistoric people may have cooked:...
They had farms ( crops ) and made them to have food .
They hunted and gathered food so they hunted animals and gathered plants
I'm pretty sure they hunted for their food... if not they probably ate stones ha