Did you know feta cheese can only be called "feta" if it is made in specific regions of Greece? If you're asking why that is, it's because of a Protected Designation of Origin (PDO) status granted by the European Union in 2002. And feta isn't the only product with this status—hundreds of food and drink items are protected under the PDO designation.
But what is a PDO, exactly, and which foods fall into this category? If you're itching to find out, click through this gallery now!