Boil water for the spaghetti. In a large pan cook diced pancetta in olive oil on a medium heat. Stir pancetta often. When the pancetta begins to crisp, reduce heat to low and add garlic, black pepper and peas and continue to stir regularly.

Cook spaghetti according to package instructions (around 8-10 mins). Beat egg and put to the side.

Once spaghetti is cooked, remove the pan with pancetta and peas from the heat, strain the spaghetti and then add the spaghetti to the pan with the pancetta and peas.

Combine egg and the spaghetti. Mix quickly. The heat from the spaghetti will cook the egg as it is mixed. Mix the parmesan cheese into the spaghetti and serve hot.