Wash the brinjals and tomato thoroughly and wipe them dry.
Place the brinjals and tomato on a grill rack over an open flame. Grill them slowly, turning occasionally, until the skin is evenly charred and blistered.
Once roasted, allow them to cool slightly. Peel off the burnt skin completely.
Mash the roasted brinjals and tomato gently using your fingers or a spoon and keep aside.
Heat oil in a small pan and fry the dry red chillies until crisp. Switch off the flame.
Add the fried red chillies along with the chilli-infused oil to the mashed brinjal mixture.
Add finely chopped onion, salt, and coriander leaves.
Mix everything well until slightly coarse. Do not grind the mixture.
Taste and adjust salt if needed. Serve immediately with hot rice.