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|Country of origin||Italy|
|Region, town||Sardinia, Lazio, and Province of Grosseto (Tuscany)|
|Source of milk||Sheep|
|Texture||hard and very crumbly|
|Aging time||5 months or more|
|Certification||Certification PDO 1996|
Pecorino Romano is a hard, salty Italian cheese, often used for grating, made out of sheep milk (the Italian word pecora, from which the name derives, means sheep). Pecorino Romano was produced in Latium up to 1884 when, due to the prohibition issued by the city council of salting the cheese inside their shops in Rome, many producers moved to the island of Sardinia. It is produced exclusively from the milk of sheep raised on the plains of Lazio and in Sardinia. Most of the cheese is now produced on the island, especially in Gavoi.
Pecorino Romano was a staple in the diet for the legionaries of ancient Rome. Today, it is still made according to the original recipe and is one of Italy's oldest cheeses.
Pecorino Romano is most often used on pasta dishes, like the better-known Parmigiano Reggiano (parmesan). Its distinctive aromatic, pleasantly sharp, very salty flavour means that in Italian cuisine, it is preferred for some pasta dishes with highly-flavoured sauces, especially those of Roman origin, such as bucatini all'amatriciana or spaghetti alla carbonara. The sharpness depends on the period of maturation, which varies from five months for a table cheese to at least eight months for a grating cheese.
Pecorino Romano should not be confused with Pecorino Toscano (from Tuscany) or Pecorino Sardo (from Sardinia). Unlike Pecorino Romano, these cheeses (which are not particularly salty) are generally eaten by themselves or in sandwiches. Many stores in the United States sell a product labeled "Romano cheese", which may refer either to genuine Pecorino Romano or to a salty domestic cheese usually made from cow's milk.
Pecorino Romano cheese, whose method of production was first described by Latin authors like Varro and Pliny the Elder about 2,000 years ago, was first created in the countryside around Rome. Pecorino Romano cheese is used mostly in Central and Southern Italy.
See also 
- IL FORMAGGIO DI SARDEGNA - Fiore Sardo Pecorino Sardo Pecorino Romano Canestrati Ricotta Formaggi Molli Formaggi di capra
- (Italian) Production requirements
- (Italian) Consorzio per la Tutela del Formaggio Pecorino Romano (Consortium for the Protection of Pecorino Romano Cheese)