Pecorino is the name of a family of hard Italian cheeses made from ewe's milk. The word derives from Italian pecorameaning ‘sheep’, which in turn is from the Latin pecus meaning livestock. In Southern Italy, it is traditional to add black peppercorns or red chilli flakes to Pecorino, producing what is called Pecorino Pepato (literally, "peppered Pecorino"). Today many other additions are made, for example walnuts or rocket or tiny pieces of white or black truffle. In Sardinia, the larvae of the cheese fly are intentionally introduced into Pecorino Sardo to produce a local delicacy called casu marzu. A good Pecorino Stagionato is often the finish of a meal, served with pears and walnuts or drizzled with strong chestnut honey. Pecorino is also often used to finish pasta dishes, and used to be the natural choice for most Italian regions from Umbria down to Sicily, rather than the more expensive Parmigiano-Reggiano. It is still preferred today for the pasta dishes of Rome and Lazio, for example Pasta dressed with sugo all'amatriciana, Pasta Cacio e pepe, and Pasta alla Gricia.