Park Slope Food Coop sells a variety of locally grown, organic produce, free-range poultry, grass-fed and pasture-raised meat, wild fish, fairly-traded coffee and chocolate, fresh bread, artisan cheese, grains, spices, cleaning supplies and more. It is open to members, many of whom work at the store once every four weeks and receive a 20 to 40 percent discount on purchases. To become a member, fill out a form on the website.