Using a mixing bowl mix flour and curd .
Add in warm water and mix well so yhat there are no lunps .
Cover and keep aside for 7-8 hours , till well fermented.
Once the batter is fermented , add the veggies, turmeric powder, chili powder, ginger garlic chilli paste and salt . Finally add the Eno and give a nice stir .
Heat a non stick pan .
Add oil , as soon as it heats up add mustard seeds .
Immediately add 3-4 ladle fulls of the batter .
Sprinkle sesame seeds .
Simmer the flame to the lowest and cover the pan .
After 8-10 minutes , check the handvo , as you lift the side , it should be nice and brown .
Flip the handvo very carefully .
Cover again and let cook for another 8-10 minutes .
Check it should be crisp .
Serve hot .