How were camas bulbs prepared for eating by Plateau peoples?

For the Plateau Indian peoples, the bulb of the camas flower (Camassia esculenta) served as a vital source of starch and nutrition.1

To prepare these bulbs for consumption, they were typically cooked in earth ovens. These ovens were constructed by heating stones, which provided the necessary thermal energy to process the roots and bulbs effectively. This method of slow-roasting allowed the starchy bulbs to become edible and palatable for the community.1