Rigatoni with Pecorino and Crispy Guanciale

In a large nonstick skillet, cook the guanciale over moderately low heat, stirring, until crisp, 8 to 10 minutes. Using a slotted spoon, transfer to a paper towel–lined plate.

Meanwhile, in a large saucepan of salted boiling water, cook the pasta until al dente. Drain; reserve 1 cup of the pasta water. Return the pasta and reserved water to the saucepan and cook over moderate heat, stirring, until the liquid is slightly thickened, 2 minutes. Stir in the grated cheese. Fold in the guanciale; season with salt and pepper. Serve garnished with pecorino and more pepper.