Tomato Saar/Saaru is a tangy and mildly spiced tomato curry.
Roughly chop tomatoes. Blend tomatoes and green chili to a smooth puree in a blender.
Heat oil in a pan. Add mustard seeds. Once they crackle, add hing, curry leaves and turmeric.
Transfer the puree to a pan. Add salt, water and bring to a boil.
Add coriander leaves and mix well. Keep covered. Serve hot with rice.