To start fry the sliced onions in half a cup (5 tablespoons ) of oil. Immediately add ginger and garlic to it. Keep the stove of medium heat and let the onions caramelize. When the onions turn darkish brown add the meat and keep stirring it till all the meat is covered with the onions. After a few mins you will notice water oozing out of the mutton. At this point you need to keep stirring it regularly till all the water does not dry out ( this is done to let away of the stinkyness of the meat). Once the water is gone you will see the mutton getting drier. At this point before the meat starts getting charred pour in around 250 ml (2 glasses ) of water.