Boil water. 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).

Finely chop the 100g pancetta, having first removed any rind. Finely grate 50g pecorino cheese and 50g parmesan and mix them together. Mix most of the cheese in with the eggs, keeping a small handful back for sprinkling over later.

Beat the 3 large eggs in a medium bowl and season with a little freshly grated black pepper. Set everything aside.

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.

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.

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.