Pecorino Romano cheese

Cut guanciale into 1-inch by 1/8-inch strips.

Heat olive oil over medium heat in a saucepan. Add guanciale and cook until well browned and fully rendered, 5 to 7 minutes. Turn off the heat and use a slotted spoon to transfer it to a bowl. Leave all fat in the pan.

Start pasta: Bring a large pot of generously salted water to a boil. Cook rigatoni in the boiling water, stirring occasionally, until not quite done, about 10 minutes. You want it undercooked by at least 1 to 1 1/2 minutes.