Take the pork ribs and remove the silvery layer from the bones. It is not absolutely necessary but many do it for one reason or the other. Rub the meat with salt, pepper and paprika.
Pour olive oil into a pan and caramelize the diced onions. Add tomato, salt and vinegar and cook it for about 10-15 more minutes to thicken it up a bit. For more detailed instructions check out how to make BBQ sauce.
Rub salt on the ribs and place them onto a tray. Brush the meat with the BBQ sauce. Add some vegetables for later serving if desired.
Cover the tray with some sort of lid, tin foil or another tray then place it into a 225°F – 250°F / 110°C – 120°C oven until tender for about 4-6 hours.