Assemble: veggies for dal.
Soak tamarind in warm water for 15-20 minutes.
Heat oil in a pan, add carrots and cook for 1 minute. Toss in baingan/small eggplant, tomato, lauki and red chili powder.
Cover and cook for 3-4 minutes or until veggies are soft and tender. Add sambar masala, jaggery and mix it well.
Veggies are all ready.
Add soaked tamarind water to the boiled and mashed dal.
Return dal to a low flame and add cooked veggies to it.
Mix and bring it to a boil.
Cover and allow it to simmer for a while.