The best shapes for neapolitan ragu
Whole cuts of meat braised in tomato for many hours. The meat is lifted out and served as a separate course, so the sauce that reaches the pasta is a heavy, deeply reduced tomato carrying the flavour of the braise but almost none of its solids.
Whole cuts braised in tomato for hours, the sauce and the meat served apart. The sauce itself is a heavy tomato coat that loves ziti and paccheri.
Canonical: ziti, fusilli, paccheri.

The rings are a binding shape, not a plating shape.

Caccavelle work as a single giant cup, parboiled and then stuffed and finished in the oven.

The wide short ring wants seafood and a light tomato base, not heavy meat.

The wide round bore is the whole point.

A fusillo is a ribbon twisted into a helix, so sauce does not just coat it, it lodges in the grooves between the turns.

A lasagna sheet is less a noodle than a building material.

The build is a contrast machine.

The wide bore is the working feature.

A cooked pacchero rarely stays a cylinder.

Ziti is a smooth, even-walled tube, so it slips past thin sauces and asks for ones with real body.
What we would not put it on
Small shapes. A sauce this concentrated dwarfs them, and the balance of the plate tips entirely to the dressing.
Want it the other way around? Start from a shape in the Pairing Finder.
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