Brunelli Pecorino Romano is a specific brand of traditional Italian cheese made from sheep's milk, known for its sharp, salty flavor and firm, crumbly texture. Produced by the Brunelli company in Lazio, Italy, it is aged in ancient tufa caves to develop its unique taste and is a staple in Roman cuisine, especially for grating over pasta.  The Brunelli company is a key producer, known for using traditional methods like hand-salting.