How to Make It
Heat the oil in a large saucepan. Add the pancetta and cook over moderately high heat until it begins to brown, about 3 minutes. Add the onion and garlic and cook, stirring, until the onion softens, about 4 minutes. Add the parsley, mint, celery leaves and red chile and cook, stirring, for 2 minutes. Add the tomatoes and their liquid and simmer over moderately high heat, crushing the tomatoes with a wooden spoon, until the sauce is thick, about 25 minutes. Season with salt and pepper.
Cook the pasta in a large pot of boiling salted water, stirring, until slightly underdone. Drain the pasta lightly, then add it to the sauce and cook for about 1 1/2 minutes longer, until just al dente. Transfer the strozzapreti to a warmed bowl and pass the cheese separately.