[header] How to tell the difference between parmesan and pecorino [title] Note that the two cheeses are made from different milk sources. [step] Parmesan is made from cow's milk, whereas pecorino is made from ewe's milk. In fact, the word " pecora " is italian for " ewe ". 
Italians refer to parmesan as " parmigiano reggiano ". [title] Be aware of the textural and taste differences between the two types of cheese.