"Pounded." Pesto refers to anything pounded, but by far the pest known version is the speciality of Genoa, a sauce using basil, olive oil, pine nuts, garlic, Parmesan and pecorino cheese. It is often served with trenette. Increasingly other combinations of herbs, nuts and cheeses are being termed "pesto." The summer of 2006 was disastrous, with almost the entire basil crop lost fo torrential storms.