Rigatoni pasta tubes have slight grooves on their sides. This is where they actually get their name. The Italian word “rigare” meaning “to scratch” or “draw a line.” We love a Rigatoni alla carbonara; however, this shape is great with a ragu and even baked! About Zelli Pasta: Zelli pasta has a little different look, feel, and quality than most are used to. There are a few reasons for this: Our pasta is made using bronze extruder dies. They leave the pasta with a rougher surface area for sauce to cling to. Most large manufacturers use Teflon dies because they are more efficient and easier; however, the pasta ends up being shiny and slippery. Not a good combo for sauce.