Rich Meat Soup

Winter is a couple of months off here in the tropical regions of Africa and I have started thinking of Soups. My wife loves soups and I sometimes put one together from whatever is in the fridge and freezer. A general rule...you can make soup out of just about anything. Really. Bones, fish, root vegetables, there are really few rules. There is one little secret that I have worked out over the years. A rich tasty soup or a gravy or sauce for that matter, is often rich in oils and fats. Yup, if it going to be really tasty, it might also be a bit fatty. Not always though. You can skim a lot of the animal fats off and use vegetable oils or olive oil to act as flavour carrier.
Anywayzzzz
here is a basic rich vegetable and meat soup. Real comfort food!
Ingrdients: whatever you have but this works:

 2 large onions chopped,
2 large carrots grated.
2 cups of cabbage finely sliced.
Half cup of olive oil or light vegetable oil.
About half a kilo of beef shin or chicken bones or whatever other meat or bones you might have. Beef blade is good. So are marrow bones. If you like pork, then pork trotters without the hoofy bits are fantastic and rich.
It should end up thick and semi transparent. Something like this: