Heat olive oil over a medium high heat, stir in garlic, follow with onion, carrot and celery. Stir until everything is half cook

Add ground beef and stir until turning brown

Add oregano and basil, mix it well and let the beef cook

Add tomato purée, mix until it boils, then turn the heat to minimum, cover the pan with a lid for 1,5 hours, stir occasionally, add hot water (if needed)

After 1,5 hours, open the lid and let it cook for another 25 minutes

After 25 minutes, add salt and pepper, then turn off the heat, do note move the pan

Add parmesan cheese and stir it well. Sauce are ready to serve with cooked pasta, as the red sauce for lasagna or freeze for later use