A cooperative grocery store created and owned by the vibrant community it serves--This is the Arroyo Food Co-op, an alternative grocery store that will serve L.A.'s northeast: Altadena, Pasadena and beyond. A LOCAL RESPONSE TO GLOBAL CHALLENGES Combining the regional flavors of a farmer's market, the warmth of an old-fashioned corner store and the convenience of a supermarket. YOU have a voice here, and a place to join together with other, like-minded neighbors to envision, build and sh …