Why were acorns an important food source for many Indigenous Californians?

Acorns were a vital food staple for many Indigenous Californians, particularly for groups residing in the state's foothills and valleys, as well as along the coast. They were considered the most important of the region's wild food sources, providing a reliable and abundant supply of nutrition.12

While raw acorns contain toxins, Indigenous peoples developed sophisticated technological methods to process them. Specifically, they devised a technique to leach these toxins from the acorn pulp. Once the acid content was removed, the pulp could be converted into flour, which served as a versatile and constant food resource. This ability to process and store acorns allowed communities to maximize the productivity of their diverse environments and maintain a stable food supply throughout the year.12