What is grated on an Italian spaghetti?

The most common things grated on an Italian spaghetti are:

* Parmigiano-Reggiano cheese: This is the classic choice, offering a sharp and salty flavor.

* Pecorino Romano cheese: This sheep's milk cheese provides a more pungent and salty flavor.

* Other hard cheeses: Depending on the region and sauce, other hard cheeses like Grana Padano, Asiago, or even Parmesan can be used.

It's important to note that not all pasta dishes in Italy use grated cheese. Many sauces, like pesto, are typically served without cheese.