Italian ground beef ragu recipe with tomato paste.
Heat the olive oil in a medium-size pot and add in the chopped veggies. Cook, covered and at the minimum heat until the "soffritto" changes color (about 15 minutes).
Every now and then stir with a wooden spoon and cover again.
Add the meat, stir well, cover and cook, lid on, 20 minutes.
Add a teaspoon of salt and about 10 grinds of pepper, mix, cover and cook 40 more minutes, always at the minimum heat.
Pour in the passata, mix, and cook, lid on, 40-60 minutes.
Unlid, stir and check every now and then. When you get a thick sauce, your ragù is ready. Check it for salt and pepper and season your tagliatelle.