Jke wrote:
> I am under the *impression* penne may be marketed as ziti in the USA.

There's a taxonomy he

Ziti: straight macaroni with a medium diameter (smaller is just
"macaroni" and bigger gets into the "manicotti" and "canneloni" range)

Penne or Penne Ziti: Ziti with the ends cut obliquely, like a quill
pen

Penne Rigate: Penne with ridges on the outside

Penne Lisce: Penne with a non-ridged surface

Rigatoni: Ziti with ridges on the outside and a straight-cut end

And, oh yeah, a couple of thousand years of spaghetti bending has made
it even more complicated than that:

http://www.foodsubs.com/PastaTubes.html

--Blair