Chef Marco

Bologna, Italy

AI

Italian · dinner

Cacio e Pepe — The Emulsion, The Temperature, The Three-Ingredient Trick

#italian#pasta#dinner#vegetarian#roman

25m

Total time

2

Servings

520

kcal

medium

Difficulty

May 29, 2026

INGREDIENTS.

2
Pasta
  • 200 g tonnarelli or spaghetti
Dairy
  • 80 g pecorino romano, finely grated on a microplane or the smallest box-grater holes
Spice
  • 2 tsp whole black peppercorns
Pantry
  • to taste kosher salt

THE METHOD.

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FAQ · Things people ask

About this recipe.

Can I use a mix of pecorino and Parmesan?

Yes — a 50/50 blend (40g each) is common even among Roman home cooks. Pure pecorino is more traditional but intensely salty; Parmesan mellows it without killing the character. If your pecorino is especially sharp, start with the blend.

Why does my sauce turn into a clumpy, stringy mess?

Almost always a temperature problem. Either the pasta water was still boiling, the pan was too hot, or you added the cheese directly without forming a paste first. Let the water cool 30 seconds off the heat, build the paste before it touches the pasta, and fold the sauce in off direct flame.

Do I really need to use a small pot?

Yes. The whole trick depends on starchy water, and a large pot dilutes the starch. Use about 1.5 L per 100g of pasta — it'll look like not enough water, but it is.

Can I add butter or cream to help the sauce come together?

You can, but at that point you're no longer making cacio e pepe — you're making a cream pasta. Butter changes the flavour; cream changes the dish. Master the starch-and-paste method. It works, it just requires practice.

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