Ingredients:
1 kg - boneless mutton, cut into serving portions
250 g - beaten curds
1 - lime-sized ball of tamarind
2 tbsps - or more sugar as per your taste
1 tsp - turmeric powder
1 tbsp - ground cumin seeds and garam masala
1/2 tsp - each of coriander powder and ground mustard seeds
salt and chilli powder to taste
a few sprigs coriander leaves