- 1
Bring a large pot of water to a boil. Salt it lightly because Pecorino and guanciale are already salty.
- 2
Remove the guanciale rind, then cut the meat into small strips about 1 cm / 0.4 in thick so they render evenly.
- 3
Place the guanciale in a cold pan. Cook over medium-low heat for 6–8 minutes, stirring often, until the fat melts and the pieces turn golden at the edges.
- 4
Turn off the heat. Keep the rendered fat in the pan and reserve a few crisp pieces for topping.
- 5
Finely grate the Pecorino Romano. The finer it is, the easier it will melt into a smooth sauce.
- 6
In a bowl, whisk the yolks, whole egg, Pecorino, and black pepper into a thick paste. It should look dense, not runny.
- 7
Cook the pasta until al dente. Just before draining, reserve plenty of starchy pasta water.
- 8
Temper the egg mixture by whisking in 2–3 spoonfuls of hot pasta water until glossy and loosened.
- 9
Add the drained pasta to the guanciale pan, away from direct heat. Toss well so every strand is coated in the fat.
- 10
Pour in the egg and Pecorino mixture off the heat. Toss continuously with tongs; the residual heat will thicken the sauce gently.
- 11
Add small splashes of pasta water until the sauce becomes shiny, creamy, and clings to the pasta. Do not scramble the eggs.
- 12
Serve immediately with reserved guanciale, extra Pecorino Romano, and more black pepper.