Assemble: ingredients to boil dal.
Clean and wash dal.
Transfer dal to a pressure cooker, add salt and turmeric powder. Cover and pressure cook for 2-3 whistles.
Allow the steam to escape before opening the lid, dal all done and cooked.
Whisk the dal. Set it aside.
Soak tamarind in warm water for 15-20 minutes. Use a spoon to mash up the lumps. Strain and set it aside.
Wash and assemble veggies for dal. Chop the veggies into cubes.
Heat oil in a pan, add carrots and cook for 1 minute.
Toss in onion, baingan/small eggplant, tomato, zucchini and lauki.
Cover and cook for 2-3 minutes or until veggies are fork tender. Add jaggery sambar powder, and mix it well.
Add veggies to the cooked dal.
Add tamarind water to the cooked dal. Mix until well blended. Cover and cook for 4-5 minutes on a medium-low flame.