What is the Somerville Granola Making Co-op? Exactly what it sounds like! Members of the co-op take turns making granola for the group from locally sourced ingredients. Granola is made and picked up at First Church of Somerville at 89 College Ave. Each member must take at least one turn making the granola. Membership costs $24 for 6 months of granola, providing one pound each month. Members can choose to receive up to eight shares at a time.