Over medium heat, fry onion in a little olive oil, then add the celery, carrots, garlic and herbs and cook for about 10 minutes, adding a drop of water if needed.
Add the tomato paste and Pinotage and allow to cook for a further 5 to 10 minutes until wine has reduced.
Add the mince and allow to brown. Season with salt and pepper. Add the tomatoes, stock and sugar. Cover and cook for 1 ½ hours.
Cook pasta according to package instructions. Add about half a cup of the pasta water to the sauce to loosen a bit. Drain the pasta, then combine with the sauce, reserving some of the sauce to add an extra dollop on top.