Slice the guanciale about ½ cm thick, then cut into thin strips.
Step 2
Place the guanciale in a hot pan and cook over medium-high heat, stirring often until golden but not burnt. Remove and set aside.
Step 3
Cook the casarecce for about 10 minutes. Drain directly into the pan, add a ladle of pasta water, Pecorino, the cooked guanciale, and freshly ground pepper.
Step 4
Toss everything together until the sauce becomes creamy — the starch from the pasta will naturally thicken it.
Step 5
Serve immediately with an extra sprinkle of black pepper to taste.