I make ziti with a basic tomato sauce (sofritto, tiunned San Marzano, bit of red wine), slab bacon lardons, pancetta, hot Italian sausage meat, liver sausage. The copious leftovers are packed into baking pans for ziti pasticchio with toasted bread crumbs and croutons, shaved and grated parmesan or Gran Padano or pecorino or combination thereof. Baked at 350 F for at least an hour until crusty. Now as to ricotta. Sometimes I'll serve a mound of cold ricotta with the hot, crunchy and tender ziti. But often not because the temperature contrast will be a salad or chilled tomato consomme or somesuch.