In a bowl add yogurt and gram flour and mix until smooth paste. Add salt, turmeric powder, chilli powder, ginger garlic paste, chilli paste and kasuri methi and mix well.
Cut the aubergine in small cubes and add and let it marinate for 1/2 an hour.
In a wok heat oil and fry the marinated aubergine until golden brown on medium heat.

N a pan heat oil and add cumin, mustard and onion seeds. Once it starts fluttering add the onions and sauté for 2 minutes. Add tomatoes and onions and cook for a minute or so. Now add in the ground peanuts, chilli powder, turmeric powder, salt and add 1/2 cup water. Let it cook for 3 to 4 minutes. Add the fried aubergine and mix well. Cook for further 2 minutes on medium heat. Transfer in serving bowl and garnish with coriander and spring onions.