
Bring a large pot of water to a boil and salt it well.
Meanwhile, trim the thick skin off the guanciale and cut it into medium-sized strips (photo 1)
Heat a large pan on a low-medium heat and add the guanciale. Fry until the guanciale is golden and crispy, then remove with a slotted spoon and set aside. Leave around 2 tablespoons of guanciale fat in the pan and pour the rest into a bowl, just in case you need extra. Turn the pan off the heat (photos 2-4).
Next, add the pasta to the boiling water and cook 2 minutes under the packet instructions.
Meanwhile, finely grate the pecorino cheese into a bowl and add a generous amount of black pepper. Remove some pasta water from the pot and add it to the grated cheese whilst whisking until a thick paste forms. Set aside (photos 5 and 6).
When the pasta is al dente, add it to the pan with the guanciale fat and turn the heat back on to medium. Add a splash of pasta water (around 1/2 cup/125ml) and stir the pasta until the pasta water has thickened slightly (2-3 minutes).
Next, turn the heat off and add the cheese paste. Stir vigorously until creamy and emulsified (tossing it in the pan also helps at this point) (photos 7 and 8).
Serve in bowls topped with the crispy guanciale.