Cacio e pepe

Cacio e pepe () is a pasta dish from the cuisine of the city of Rome. "Cacio e pepe" means "cheese and pepper" in several central Italian dialects. As the name suggests, the ingredients of the dish are: black pepper, grated Pecorino Romano cheese, and spaghetti, or traditionally tonnarelli. All the ingredients keep well for a long time, which made the dish practical for shepherds without fixed abode. Rough-surfaced pasta is recommended, to make the sauce adhere well.
Preparation.
The pasta is prepared in boiling salted water as usual; it is then poured into the grated pecorino mixed with black pepper, with a little of the hot, starchy, cooking water. The heat melts the cheese, and the starches in the water help bind the pepper and cheese to the pasta.
Variants.
While not traditional to cacio e pepe, seafood or bacon may be added, and other shapes of pasta such as rigatoni, always made with a rough surface, may be used.