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Italian · Pasta

Spaghetti alla Carbonara

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Spaghetti alla Carbonara

About this recipe

Italian cooking is built on time-honoured regional traditions — pasta from the south, risotto from the north, the everyday economy of a Tuscan kitchen — where simplicity, seasonality, and respect for the produce typically matter more than complexity of technique.

As a pasta dish, Spaghetti alla Carbonara relies on the interplay of sauce, pasta shape, and the small science of pasta water — the starchy cooking liquid that thins the sauce and helps it cling. Two minutes of pasta-water finishing changes most dishes.

Set your servings in the scaler above and every line of the recipe rewrites itself with smart fractions and unit promotion. Open Cook Mode to step through it hands-free with timers running.

Curated by the ScaleRecipe editorial teamReviewed

Recipe data is sourced from TheMealDB's open community database; ScaleRecipe handles the curation, the scaling math, the editorial commentary, and the conversion utilities woven into each page.

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Method

  1. STEP 1
  2. Put a large saucepan of water on to boil.
  3. STEP 2
  4. Finely chop the 100g pancetta, having first removed any rind. Finely grate 50g pecorino cheese and 50g parmesan and mix them together.
  5. STEP 3
  6. Beat the 3 large eggs in a medium bowl and season with a little freshly grated black pepper. Set everything aside.
  7. STEP 4
  8. Add 1 tsp salt to the boiling water, add 350g spaghetti and when the water comes back to the boil, cook at a constant simmer, covered, for 10 minutes or until al dente (just cooked).
  9. STEP 5
  10. Squash 2 peeled plump garlic cloves with the blade of a knife, just to bruise it.
  11. STEP 6
  12. While the spaghetti is cooking, fry the pancetta with the garlic. Drop 50g unsalted butter into a large frying pan or wok and, as soon as the butter has melted, tip in the pancetta and garlic.
  13. STEP 7
  14. Leave to cook on a medium heat for about 5 minutes, stirring often, until the pancetta is golden and crisp. The garlic has now imparted its flavour, so take it out with a slotted spoon and discard.
  15. STEP 8
  16. Keep the heat under the pancetta on low. When the pasta is ready, lift it from the water with a pasta fork or tongs and put it in the frying pan with the pancetta. Don’t worry if a little water drops in the pan as well (you want this to happen) and don’t throw the pasta water away yet.
  17. STEP 9
  18. Mix most of the cheese in with the eggs, keeping a small handful back for sprinkling over later.
  19. STEP 10
  20. Take the pan of spaghetti and pancetta off the heat. Now quickly pour in the eggs and cheese. Using the tongs or a long fork, lift up the spaghetti so it mixes easily with the egg mixture, which thickens but doesn’t scramble, and everything is coated.
  21. STEP 11
  22. Add extra pasta cooking water to keep it saucy (several tablespoons should do it). You don’t want it wet, just moist. Season with a little salt, if needed.
  23. STEP 12
  24. Use a long-pronged fork to twist the pasta on to the serving plate or bowl. Serve immediately with a little sprinkling of the remaining cheese and a grating of black pepper. If the dish does get a little dry before serving, splash in some more hot pasta water and the glossy sauciness will be revived.

Cooking notes

Pasta scales beautifully — water and salt should track the dry weight; sauce can be reduced slightly if you scale up beyond a single pan.

For volume-to-weight conversions of any ingredient — flour, sugar, butter, salts — use the ingredient converter. To translate the recipe's oven temperature between °C, °F and gas mark, see the temperature converter.

When you scale this recipe up or down, remember that cooking time does not scale linearly. A doubled cake takes longer, but not twice as long; a doubled soup takes roughly twice as long. The cooking-time guide gives sensible starting estimates by dish geometry.

Scaling notes

Scaling Spaghetti alla Carbonara

Spaghetti alla Carbonara is written for around four servings as it stands on this page — scaling it up for a party or down for a meal-for-one is the small math problem most home cooks face every week. Here's how this particular dish responds to scaling, what changes linearly, and what doesn't.

Pasta is among the easiest dishes to scale: both the water volume and the boil time stay almost constant. Doubling Spaghetti alla Carbonara means doubling the sauce (linear) while keeping the pasta-water salt at roughly 1 % of the water's weight regardless of batch size. The most common scaling mistake is over-salting the sauce because the recipe writer assumed a smaller starting batch.

This recipe calls for eggs, which are the trickiest ingredient to scale to non-integer multiples. A US "large" egg weighs about 50 g; if a fractional scaling lands on, say, 1.5 eggs, beat one egg and weigh 25 g of the beaten mixture rather than guessing. The same goes for halving recipes — half an egg is 25 g of beaten egg, not a dramatic estimate.

Skip the math entirely — ScaleRecipe's scaler rewrites every ingredient line above with proper culinary fractions and smart unit promotion the moment you change the serving count. Open the scaler →

Beyond the recipe

Substitutions & make-ahead — Spaghetti alla Carbonara

Two things home cooks ask about most when they're outside the recipe's exact assumptions: what swaps work for which ingredients, and how the dish behaves when you make it ahead. Both depend on what Spaghetti alla Carbonara is doing structurally — here's the practical version.

Substitution ideas

Eggs

For binding (cookies, quick breads, meatballs): 1 large egg ≈ 1 tbsp ground flaxseed + 3 tbsp water, rested 5 minutes until gelled — structurally closest to a real egg. For moisture without structure (cakes, brownies): ¼ cup unsweetened applesauce or mashed banana per egg, accepting some loss of rise.

Bacon

For the smoky-savoury layer: ½ tsp smoked paprika + 1 tbsp olive oil approximates the bacon backbone in soups and stews. For texture, pancetta, smoked turkey, or a quality vegan bacon brand. Maillard browning is the hardest to fake — no fat-free option matches the crisp.

For weight-based swaps and arbitrary quantities, the ingredient density converter and the cup-to-grams chart cover most pantry staples.

Make-ahead and storage

Pasta dishes split into two halves for make-ahead purposes. The sauce in Spaghetti alla Carbonara can be made up to 3 days in advance and refrigerated, then warmed gently while you boil fresh pasta. Cooked pasta itself doesn't store well — it absorbs water and turns starchy. If you must store the dish assembled, undercook the pasta by about a minute on day one so the reheat lands at al dente. Cheese-based sauces are best dressed at the last minute.

Recipe video

Spaghetti alla Carbonara

Go deeper

Where this recipe sits in the wider tradition.

Each guide below is a real essay on the cuisine or the category — pillars, staples, techniques worth learning — paired with a curated grid of recipes filed under it.

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