Roast all the whole spices and cashew nuts until they turn slightly browned and fragrant.
Add them in a blender along with fried onion and add 1 tablespoon water to make a coarse paste.
For the curry
Heat oil and ghee in a pressure cooker.
Add mutton pieces and fry on high heat for 8-10 minutes.
Add the masala paste and ginger garlic paste and fry for 3-4 minutes.
Now add yogurt, coriander powder, red chilli powder, turmeric powder, cumin powder and salt and fry for 3-4 minutes.
Add 2 cups of water and pressure cook until mutton is cooked well.
Remove the cooker from heat and let the pressure release.
Add saffron soaked in water and kewra essence and mix well.
Add more water if required and cook for some more time.
Garnish with fresh coriander and serve hot.
Notes
Use the best quality Mutton from a trusted butchery.The cut of the meat makes a lot of difference in taste and an experienced person only knows how to cut the meat properly.You can also make this recipe on low flame and instead of cooking it in a pressure cooker, cook it covered on low flame for 60-70 minutes.The taste will be different.Do not add a lot of water in the pressure cooker before closing it.The mutton will release it’s own water and if you also add too much water, the curry will be very runny.Add the mutton in the pressure cooker before adding yogurt and fry it well on high heat to sear the meat.This will keep the juices locked in the mutton and it will be very flavourful.From what I have learned from my elders, the colour of the fried onions decides the colour of the final curry.Do not hurry in frying the onions.Fry until they are nicely browned.Do it on medium heat otherwise the onions will burn and the flavour will not be good.You can check out the process to make golden fried onion here.I also like to add poppy seeds and a few cashew nuts or almonds while grinding the onion paste. It makes the gravy even richer.Adding some flour in yogurt makes sure it does not separate while cooking. This is a trick I always use while using curd in any curry.Do not miss on Kewra Water and Saffron, it gives it that much needed royal touch.For a more rich taste, you can skip the oil and make the Mutton only ghee.