Heat oil in a pan. Add the mustard seeds, chana dal and urad dal and let them splutter.
Fry until they are browned.
Then add the chopped green chillies, red chilli pieces and curry leaves and fry for a couple of seconds.
Add the chopped onion and fry till transparent.
Add vegetables and turmeric and saute for a minute.
Sprinkle little water and cover it with a lid.
Cook until the vegetables are tender.
Soak the vermicelli in salted water for 1 – 2 minutes. Drain the vermicelli.
Steam cook the soaked vermicelli in idli plates for 5 – 6 minutes.
Add the steamed vermicelli and salt to the veggies and combine everything.
Cover and cook for another couple minutes and turn off the flame.
Add lemon juice and mix.