Protected Designation of Origin (PDO) is an EU labeling scheme that guarantees the authentic regional identity of consumer food products. In France, 51 dairy products, including cheeses, butters, and creams, carry the PDO seal, a sign of artisanship and adherence to specifications related to production zones, production processes, and livestock diets, among other factors. Protected Designation of Origin (PDO) is an EU labeling scheme that guarantees the authentic regional identity of consumer food products. In France, 51 dairy products, including cheeses, butters, and creams, carry the PDO seal, a sign of artisanship and adherence to specifications related to production zones, production processes, and livestock diets, among other factors. Cell & Microbiology Agriculture Phys.org – latest science and technology news stories