Toast the cumin and coriander seeds in a small pan on medium heat. Allow to cool, then grind to a fine powder.
Heat half the oil in a pan, and add the whole tempering spices until they start to sizzle
Now add the chopped onions, whole garlic cloves, ginger, salt and sugar. Fry until the onions and garlic start turning brown. Take off the heat, and allow to cool a little
Combine the fried onion and spice mix, the ground coriander and cumin seeds, turmeric and a little water in a blender. Blend to a paste
Place the meat and the paste into a mixing bowl and mix well. Cover and refrigerate overnight
to cook
Heat the remaining oil in the pressure cooker and fry the potatoes, cut side down, until the edges turn crisp and golden. Remove from the cooker and set aside.
Add the marinated mutton pieces into the pressure cooker. Cook on high heat for three minutes, stirring continuously, so that all the meat pieces are browned evenly
Add the tamarind water and fold in with the mutton. Seal the pressure cooker and cook on low heat for ten minutes
Remove the cooker from the heat and release pressure quickly.
Add the fried potatoes, carrots and peas to the mix and add warm water, if required. Close and seal the lid and cook for ten minutes on medium heat
Remove from heat, and leave until the pressure comes down. Open the lid and stir. Add the ghee and garam masala. Close the lid and let the flavours seep into the meat properly for 30 minutes.
to serve
Sprinkle with coriander leaves and serve.
notes
Mutton can be hard to find, so lamb can be substituted. Adjust cooking times in accordance with your pressure cooker instructions.
If you don’t have a pressure cooker, then this dish can be done on the stove top. Adjust cooking times to allow for this. You may have to at least double the times.