Wash thoroughly and finely chop the coriander leaves.
Using a mortar and pestle, crush coriander seeds, garlic,and green chillies into a coarse paste. Set aside.
In a mixing bowl, whisk together besan, turmeric powder, salt, and about 1 ½ cups water to make a smooth batter. Keep aside.
Heat 1 tbsp oil in a pan. Add cumin seeds and let them crackle.
Add hing followed by the crushed spice paste. Sauté until fragrant.
Add red chilli powder, chopped coriander leaves (4 cups) , peanut powder, and sesame seeds. Mix well.
Lower the heat and gradually add the besan batter, stirring continuously to avoid lumps.
Cook on low flame,stirring until the mixture thickens and leaves the sides of the pan.
Transfer immediately to a greased plate or tray. Spread evenly with a spatula. Allow to cool completely. Cut into squares or diamonds.
Heat oil in a deep pan. Fry the vadis until golden and crisp.
ServeKothimbir vadis with green chutney /tomato ketchup.