What did the Pomo people make with acorns?

The Pomo people used acorns as a staple food source, processing them into a meal by leaching out the tannins that made them bitter. They would grind the acorns into a fine flour, which could then be mixed with water to create a porridge or dough for baking. Additionally, acorns were used in various traditional dishes, showcasing their significance in Pomo cuisine and culture.