Sinigang na baka, sopa con costillas

Sinigang na Bakasoup with ribsIngredients:1400 gr short ribs, beef brisket ribs2000 ml of water1 onion2 tomatoes1 tbsp fish sauce3 green Lomboks6 gabi/taro pieces15 cm labanos/daikon/rammenas/rettich1 bunch of kangkung15 tamarind + 200 ml water1 tsp salt1 tsp pepperPreparation:Cut the ribs into pieces. Cut the onion into cubes. Cut the tomatoes into wedges. Peel the gabi and cut it into pieces. Peel the labanos and cut them into 1 cm thick slices. Cut the kangkung into pieces. Halve the lomboks and cut them into pieces.Heat the water together with the tamarind in a pan and bring to the boil. Mash the tamarind finely and then strain it.Heat the water together with the meat in a pan and bring to the boil. First remove the foam/scum and then add the onion, tomato and fish sauce. Then simmer over low heat and covered for 90 minutes until the meat is tender.Then add the gabi and cook for 7 minutes. Then add the lomboks and labanos and cook for 4 minutes. Then add the salt, pepper and asam water and mix well. Then add the kangkung and cook for 1-2 minutes. Serve.