Organic food is produced by methods that meet the standards of organic farming. Standards vary around the world, but organic farming generally involves practices that recycle resources, promote ecological balance, and conserve biodiversity. Organic product organizations may limit the use of certain pesticides and fertilizers used in their production. In general, organic foods are not usually processed using irradiation, industrial solvents or synthetic food additives. This section includes coffees that are not only organically grown, but also have the appropriate certification.