Which answer matches this clue: the Roman pasta dish made with only pecorino cheese, black pepper, and starchy cooking water?

• A Pasta alla gricia
• B Cacio e pepe ✓
• C Pasta al pesto
• D Spaghetti aglio e olio

Cacio e pepe is one of the oldest Roman pasta dishes; its emulsion relies solely on the right temperature and technique, with no cream or butter.