🇮🇹 Italian · Pasta
🍝 Cacio e Pepe
Cacio e Pepe
Cacio e Pepe — 'cheese and pepper' — is deceptively simple in ingredients yet notoriously tricky in execution, transforming just Pecorino Romano, black pepper, and pasta water into a glossy, clinging sauce.
This Roman classic has just three ingredients beyond the pasta itself, which means there's nowhere for technique to hide — the emulsion of starchy pasta water and finely grated Pecorino is what separates a silky sauce from a clumped, broken mess.
Ingredients
Equipment: Large pot, Large skillet, Mortar and pestle or spice grinder, Tongs
- 400 g (14 oz) tonnarelli or spaghetti
- 200 g (2½ cups) finely grated Pecorino Romano
- 2 tsp whole black peppercorns, plus more to taste
- Fine sea salt, for the pasta water
Method
- Toast the whole peppercorns in a dry skillet over medium heat for 1–2 minutes until fragrant, then coarsely crush with a mortar and pestle or the flat of a knife.
- Bring a large pot of lightly salted water to a boil — use less salt than usual, since Pecorino is already very salty.
- Add the crushed pepper to the dry skillet and toast for another minute to bloom its aroma, then add a ladleful of pasta water and simmer gently.
- Cook the pasta until just shy of al dente, reserving at least 2 cups of pasta water before draining.
- In a separate bowl, mix the grated Pecorino with a few tablespoons of pasta water, whisking to form a smooth, loose paste — this pre-emulsification prevents clumping later.
- Add the drained pasta to the skillet with the pepper, tossing with a splash more pasta water.
- Remove from heat, then add the cheese paste gradually, tossing continuously and vigorously, adding pasta water as needed until glossy and creamy.
- Serve immediately, off the heat — the sauce can seize if it gets too hot or sits too long.
Chef Tips
- Combining the cheese with pasta water into a paste BEFORE adding it to the hot pasta is the most reliable way to avoid clumping.
- Work off direct heat when adding the cheese — too much heat causes the proteins to seize into stringy clumps.
- Freshly cracked pepper, toasted briefly, makes a noticeably more fragrant dish than pre-ground pepper.
Common Mistakes to Avoid
- Adding cheese directly to very hot pasta without pre-mixing with water first — this is the number one cause of a clumpy, broken sauce.
- Over-salting the pasta water, since Pecorino already brings significant salt.
- Letting the dish sit too long before serving, as the sauce thickens and can seize.
Nutrition (per serving)
Health Benefits
- A good source of calcium and protein from the Pecorino.
- Simple, minimally processed ingredient list.
Cultural Note
Cacio e Pepe is considered one of Rome's 'four great pastas,' alongside Carbonara, Amatriciana, and Gricia — all built on the same foundational trio of guanciale, Pecorino Romano, and black pepper in various combinations.
Storage & Serving
Storage: Best eaten immediately — the emulsified sauce does not hold or reheat well.
Reheating: Not recommended; the sauce breaks upon reheating. Make fresh each time.
Serve with: A simple arugula salad, Crisp white wine, Crusty bread