Long viewed as ‘kitchen middens’, the shellmounds of the San Francisco Bay Area have -provided archaeologists of coastal California insight into the subsistence and ecology of precontact native groups. In this article, the authors develop a framework for understanding the cultural significance of these shellmounds which regards them as intentional cultural features, incorporates social context, and builds on earlier subsistence-focused studies of the shellmounds in order to better appreciate the meaning of the numerous human remains interred therein. A structural analysis is then used to show that the concepts of food and ancestors joined together at shellmounds, so much so that ritual attention to the ancestors was very likely regarded as essential to ensuring a continuing supply of food.