Kourellas Says Organic Feta P. D. O. cheese, produced by Kourellas S. A., is known for its adherence to traditional cheesemaking methods. This Greek cheese is made from organic sheep and goat milk sourced from local farms. It carries the Protected Designation of Origin (P.
Kourellas S. A. is a family-owned dairy producer based in Grevena, Greece, established in 1960. The company specializes in organic dairy products and is recognized for producing a variety of cheeses, including feta, which adhere to traditional Greek cheese-making methods.