Cacio e Pepe

Ingredients

• spaghetti
• grated Pecorino Romano
• peppercorns

Method

Cacio e pepe works on a single principle: emulsification. You're making a cheese sauce without cream by using starch and fat to bind the Pecorino into a silky coating. The pasta water is your emulsifier; the residual heat and starch molecules hold the cheese and pepper together. Neglect this and you get broken, greasy clumps.

Toast the black peppercorns in a large pan over medium heat until fragrant — roughly two minutes. You're waking the aromatics, not charring them; they should smell alive, not burnt. Crush them coarsely with the flat of a knife or pestle; you want flakes and rough shards, not dust. Set half aside for finishing.

Bring a large pot of salted water to a rolling boil — it should taste like the sea. Cook the spaghetti until three minutes short of the package time. This is crucial: the residual cooking in the pan will finish it. Reserve at least 250ml of pasta water before draining. Do not rinse the pasta.

Add the hot, wet spaghetti directly to the pan with the toasted pepper and toss over medium heat. Pour in 60ml of pasta water and work the pasta constantly with tongs or two forks, breaking up any clumps. The starch will start leaching into the water, creating a milky suspension.

Off the heat, add the Pecorino in handfuls — roughly 150g for four people — tossing continuously. Add another 60ml of pasta water and keep moving the pasta. The sauce won't look right at first; it'll seem thin and broken. Keep tossing. After a minute, the pasta-water will thicken, the fat from the cheese will emulsify with the starch, and you'll have a creamy, cohesive coat clinging to each strand. This is the moment everything works.

If the sauce breaks — if you see pools of oil — you've overheated it or added cheese too quickly. Rescue it by tossing in a splash of cold pasta water to drop the temperature and reintroduce starch. Season with the reserved crushed pepper and a pinch more salt. Serve immediately in warm bowls. The emulsion breaks within minutes, so timing between pan and plate matters.