Press GO to start step-by-step mode and keep your screen awake as you cook.
Step 1.
Add the water and salt to a saucepan and bring to a boil over a medium-high heat. Add the pasta and cook following packet instructions until al dente.
Step 2.
Meanwhile, gently toast the peppercorns for a minute in a small dry frying pan set over a medium heat (skip this step if you prefer a milder pepper flavour).
Step 3.
Use a pepper mill (or spice grinder or pestle and mortar) to grind the pepper into a mixing bowl. Grate in the cheese.
Step 4.
When the pasta has boiled for about 5 mins, take a tbsp of the boiling water, add to the cheese and mix vigorously into a paste (it will be thick and dry), then add another tbsp and keep mixing. Keep adding water and mixing until you have something nice and smooth, the texture of cream cheese.
Step 5.
Warm your serving bowls by soaking them in a washing up bowl of very hot water, then dry with a tea towel just before serving.
Step 6.
Drain the pasta, reserving a small bowl of the cooking water. Place the drained pasta back into the saucepan, then add the cheese paste and a splash of the cooking water and mix well, adding more cooking water a little at a time until you have a rich, smooth, creamy sauce.
Step 7.
Plate in the warm bowls (this is particularly important with cacio e pepe, otherwise the sauce will go cold and claggy very quickly). Finish with a little more pepper, if you like.