Method for sambar:
Soak tamarind and extract tamarind pulp.
Peel onions and slit green chillies, slice tomatoes.
Heat a kadai and add the tempering items in order.
After mustard and cumin splutter, add onion, green chillies, half of the curry leaves and saute till onion turns transparent and lastly add tomatoes, saute for a minute.
Add the tamarind extract and turmeric powder to it and after it starts to boil nicely, add the vegetable, remaining curry leaves, coriander leaves, jaggery and salt.
Let the vegetables get cooked and then add dal and bring to a boil.
Lastly add the ground masala powder and let it boil for 3-4 minutes or till the sambar gets thick enough.
Enjoy with rice or you may even with idli, vada, pongal or dosa.