Boil water in a large pan. Add salt and cook the spaghetti.

While the spaghetti is being boiled, cut the vegetables and meat.

Heat olive oil in a pan, stir-fry the above for 1 minute.

Add ketchup and sugar. Keep cooking until the sliced onions are soft.

Add the drained spaghetti and cook for 1 minute.

Flavor with pepper and parmesan cheese.