Crush idlis evenly to minimize any lumps. Set aside tempering ingredients ( curry leaves, cumin, mustard and urad seeds, dry chili pepper). Grate carrots, cut cabbage, onion, green chili pepper, dice fresh ginger, and set them in a bowl.
Heat oil in a pan and sauté tempering ingredients. Allow mustard and cumin seeds to crackle and add cut and dices veggies. Add salt, mix well and cook for a couple of minutes.
Ad crushed idlis and mix well. Cook for 2-3 minutes,