Rigatoni
Rigatoni (; ) is a type of pasta originating in Italy. They are larger than penne and ziti, and sometimes slightly curved. They are not as curved as elbow macaroni. Rigatoni characteristically have ridges down their length, sometimes spiraling around the tube, and unlike penne, rigatoni ends are cut square (perpendicular) to the tube walls instead of diagonally. The word  comes from the Italian word  (rigatone being the augmentative and rigatoni the plural form), which means "ridged" or "lined", and is associated with the cuisine of southern and central Italy. Rigatoncini are a smaller version, close to the size of penne. Their name takes on the diminutive suffix  (pluralized -ini) denoting their relative size. Rigatoni is a particular favorite pasta shape in the south of Italy, especially in Sicily. Its eponymous ridges make better adhesive surfaces for sauces and grated cheese than smooth-sided pasta like ziti. Rigatoni con la pajata 
Rigatoni con la pajata (Romanesco dialect; standard Italian rigatoni con la pagliata [riɡaˈtoːni kon la paʎˈʎaːta]) is a classic dish of the Roman cuisine. The dish can be found in some traditional trattorias in Rome. Pajata is the term for the intestines of a calf (animal) only fed with its mother’s milk. See also
 List of pasta
 List of Italian dishes

References

Cuisine of Lazio
Types of pasta