How to make mutton grey?

To make mutton grey
Ingredients:
Meat
Mustard
Coriander leaves
Tamarind
Onion
Oil
Curry leaves
Tomato
Curry powder
Togari powder
Salt to taste
Method:
Clean the mutton well and cut into small pieces.
Put tamarind into hot water.
Coriander leaves to be cut into small pieces after washing.
Tomato to be grinded after clean well.
Remove the husk of the onion put in a vessel.
Put meat in a vessel after clean in hot water.
Put all ingredients and oil, turmeric powder and keep it a side.
Put oil in a pan and heat over hearth.
After put mustard seed, curry leaves and roast meat cut into pieces.
Then put the tamarind juice and grinded tomato, garam masala, curry powder, salt.
Finally cut the coriander leaves and again boil well to serve.