Bucatini Cacio e Pepe Bucatini with Pecorino Romano and black pepper

20min · Difficulty: hard

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Cacio e Pepe exists on paper as two ingredients and some pasta water. In practice it requires a specific temperature window, a specific ratio, and a pace that does not allow for interruption. It breaks into clumps at high heat and into a gritty slick at low heat. The window in between is where the dish lives.

We use bucatini here instead of the more common tonnarelli because the hollow tube creates a small delay between when the outside is coated and when the center finishes cooking. That delay buys time to work the emulsion without the pasta over-cooking in the pan.

Grate the Pecorino Romano yourself. Pre-grated cheese has added starch and anti-caking agents that block the emulsion from forming. This is the one ingredient decision that changes the outcome reliably.

Bucatini Cacio e Pepe plated, with the Gusta bucatini alongside

Ingredients

Equipment

Preparation

  1. Toast peppercorns in a dry pan over medium heat for 1 minute until fragrant. Crush coarsely with a mortar or the flat of a heavy pan. Aim for uneven pieces, not uniform powder.
  2. Finely grate the Pecorino Romano. Set aside 1½ oz in a separate bowl for finishing. Place the remaining cheese in a wide bowl.
  3. Cook bucatini in lightly salted water. When the pasta is 2 minutes from al dente, ladle ¾ cup of hot pasta water into the cheese bowl. Whisk steadily to form a smooth, thick cream. Add water a tablespoon at a time if it seizes.
  4. Drain bucatini 1 minute before package time. Transfer to a skillet over very low heat. Pour the cheese cream over the pasta and toss continuously, adding small splashes of warm pasta water to keep it moving. The sauce should coat every strand smoothly without clumping.
  5. Remove from heat. Add the reserved Pecorino Romano and the crushed pepper. Toss once more. Plate immediately, finishing with more cracked pepper.
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Chef's note

The emulsion breaks in two directions: too hot clumps the cheese into rubbery strands; too cool makes it grainy. Work on the lowest possible flame and keep warm pasta water nearby to rescue it. Bucatini retains heat longer than spaghetti because of the hollow center — get it on the plate quickly, before residual heat breaks the sauce.

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