Grind the garam masala, black pepper corns and cumin seeds into a powder.
To this powder add the mint leaves, green chili and yogurt. Grind into a fine paste. Set aside this paste.
In a pan, take the mutton, add the ginger garlic paste, salt and turmeric powder. Cook till all the water as fried up from the mutton.
Next add in a cup of water, the ground masala paste and cook till the mutton is tender.
Add the oil and fry till the mutton is browned.
Garnish with coriander leaves and enjoy