Boil the oxtail in a pressure pot to quicken it, add salt and your know cubes with ginger and garlic and some slices of onions inside

Let it boil until the oxtail is cooked

Grind tomato, pepper and onions. Then boil it for some time and pour it into the boiled oxtail

Taste for seasoning, then let it boil to dry up a bit and add the oil

Then add the sliced green leaves and taste for seasoning and add if needed