Using a pakad or tong, create holes in the brinjal and insert cloves of garlic.
Place the brinjal, tomatoes, and potatoes on burning hot cow dung cakes or an open flame. Roast until they're soft and cooked through.
Remove the roasted tomatoes and brinjal from the heat. Place them in a bowl, cover, and let cool slightly. The steam will help loosen the skin, making peeling easier.
Peel the cooled tomatoes and brinjal, then roughly mash them together.
Remove the potatoes (they take a little more time to cook than the other veggies) from the heat and let cool. Peel and add to the mashed brinjal mixture. Mash everything together using your hands or a masher until well combined.
Stir in chopped coriander leaves, onion, green chilli, garlic, ginger, salt, and mustard oil. Mix well to combine.
Your delicious Chokha is now ready!