We'd eaten cacio e pepe four times in Rome before we tasted the real thing. The previous versions were fine — creamy, peppery, comforting. But the bowl that changed everything came from a side street in Trastevere at 1pm on a Tuesday, from a restaurant with no sign and five tables.
The owner, a woman named Giuseppina, noticed us photographing the pasta and, inexplicably, waved us into her kitchen. What followed was a twenty-minute education in restraint. She used three ingredients. She moved slowly. She never rushed the sauce.
This is her recipe, reconstructed from memory and several failed attempts.
What you actually need: The only piece of kit that matters here is a wide, heavy pan — the pasta needs room to move and a surface that holds heat evenly. We use a stainless steel sauté pan at home and it gets closest to the result from Giuseppina's kitchen.
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Ingredients
For 2 people
Method
Toast the pepper
Crack your black pepper coarsely — not powder-fine, not chunky — and toast in a dry pan over medium heat for 60–90 seconds until fragrant. Set aside. This step is not optional. Toasted pepper has a completely different character to raw.
Boil the pasta in very little water
Use less water than you normally would — about half. This concentrates the starch, which is what makes the sauce work. Salt generously. Cook pasta to 2 minutes before al dente.
Make the cheese paste
Mix grated pecorino and parmesan with a few tablespoons of pasta water to form a smooth paste. It should look like thick double cream. This is the step most recipes rush — take your time, whisk thoroughly, no lumps.
Combine off the heat
Remove the pan from heat. Add drained pasta. Add the toasted pepper. Add the cheese paste slowly, tossing constantly, adding pasta water by the tablespoon until glossy and coating every strand. The heat of the pasta melts the cheese — no direct heat needed. This is the secret Giuseppina showed us.
Serve immediately
Cacio e pepe waits for no one. Plate directly, add an extra crack of pepper, no oil, no garnish. Eat standing up if necessary.
Notes from the kitchen
- The quality of pecorino matters enormously. Buy a block and grate it yourself — pre-grated clumps and ruins the sauce.
- The pasta water is not optional decoration. It's the emulsifier. Reserve more than you think you'll need.
- If it goes gluey and clumped: too much heat. If it's thin and watery: not enough cheese or insufficient tossing. Both are fixable with pasta water and patience.
- Tonnarelli is traditional but hard to find outside Italy. Thick spaghetti (spaghettoni) is the best substitute.
The cheese grater question: Pecorino needs to be grated extremely fine — almost powdery. A box grater's fine side works, but a Microplane rasp grater produces consistently better results and is one of those tools that genuinely changes your cooking. We've used ours for 4 years across 12 countries.
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Going to Rome?
Trastevere is the neighbourhood for this. Stay within walking distance and eat at places with no English menu. The Testaccio market is worth a morning for ingredients alone.