Parmigiano Reggiano - Parmigiano Reggiano is a high-quality Parmesan cheese produced in specific regions in Italy. In the EU, all cheese labeled as 'Parmesan' is Parmigiano Reggiano. In the U.S. and generally outside the EU, go for the one labeled specifically as Parmigiano Reggiano (rather than just 'Parmesan') to get the high-quality one produced in Italy.