Though the original recipee is for the pork meat but lets say having a change in the meat type shall do no harm to the main dish so we'll cook it from mutton.
Ingradients.
1 to 1and a half kgs of mutton meat chunk with out the bones
200 gms. of butter
500 gms. of milk
2 bulbs of garlic
20-30 mint leafs,
6-7 dried red chillies

Method
take the large chunk of meat massage it well with salt the salt should be almost as you want it to be in the dish now leave it for 20-30 min. take a kadhai and put it on the flame now put butter in it about 100 gms. tkae the meat chuck and put it in the kadhai, now look for the change in colour of the meat it will become whitish pink you can turn the chunck twice to make it saute this process should carry on for about 15 to 20 min. now take the chunck out and leave it aside.
get the butter heat it now put red dried chillies after having thinly chopped, then garlic cloves all of them chopped and cut, then mint leavesafter some 3-4 min. of spices simmering (you can add up grinded garam masala, or other spices too), now add meat chunck and put milk in it till the chunck is submerged, now cover it with a lid, cook for about 1 and a hlf hour or till the meat is tender, serve with roti