Wash the mutton and marinate for at least half an hour with mustard oil, sour curd, raw papaya paste (this will help in cooking the mutton quickly and make it succulent), chopped onion, garlic, ginger, coriander powder, cumin powder, red chilli powder, black pepper and half spoon salt. Marinating enables various flavours to seep in the mutton, which is a tough and strongly flavoured meat.