Marinate the mutton with all ingredients listed under First Marinade. Refrigerate overnight.
Remove from the refrigerator, allow to return to room temperature, now add all of the ingredients listed under Second Marinade. Give it a hearty mix. Keep aside, an hour or so.
Transfer the mutton along with the marinade to a heavy bottomed pan, cover and cook, with occasional stirring, over a low flame till the mutton is about 75% cooked. About 1 hour, I would reckon.
Gently pour the milk over the mutton, continue to cook over a low flame till the mutton is tender. Another 30 mins or so.
Now pour the reduced milk, throw in the green chilies and give it a hearty stir. Cook for another 8-10 odd minutes.
Adjust seasonings, finish with a generous dollop of ghee.
Allow to rest for 15-20 minutes. Serve hot.