Add ghee in the kadai and once ghee is hot, add curry leaves.
Add Coriander seeds, cumin seeds, sliced ginger, garlic cloves and sliced turmeric pieces.
Now include shallots, pepper and salt.
Saute all together until onion turns red.
Then tomato pieces and saute until tomatoes are mashed.
Turn of the heat.
Add balloon vine leaves and coriander leaves.
Saute in the heat of kadai without any flame on.
Let it cool for 5 minutes
Grind to coarse paste.
Serve with idly, dosa or rice with some ghee.