Wash and wipe the brinjal well.
Thinly slice the brinjal and transfer it to a wide mixing bowl.
Add turmeric powder; mix well.
Add oil to the pan and heat on medium flame.
When the oil becomes hot, add curry leaves and onion; sauté for a minute.
Add the brinjal; mix well.
Add sambar powder, tamarind, and salt; mix well and cook for around 5 minutes or until brinjals turn soft.
Add besan flour; mix well and cook for 4 minutes.
Add peanuts and coconut; mix well and cook for 2 minutes or until brinjal reaches the desired texture.