How to Make Sambar
Wash Arhar dal and soak it in water for 1-2 hours(if dal is soaked earlier it cooks faster and becomes more delicious).
Make Sambhar powder
Pour 1 tsp oil in a pan(kadjai). Put Chana Urad dal and Meethi seeds, fry the two till they turn light brown. Now add coriander, Jeera, Heeng, turmeric powder, black pepper and red chilli and fry some more. Cool off the spices and grind them. You can also prepare Sambhar masala powder to use at once, but grounded spices kept for a long time lose its flavour. The smell that freshly grounded fried spices emit cannot be substituted by those stored for a long time.
Make a paste with tomatoes, green chilli and ginger.
Put dal with 2 times more water in a cooker. After 1 whistle goes off cook dal for 4-5 minutes on a a low flame. Turn off the gas.
Wash gourd, brinjal and lady's finger then cut them into 1 inch long pieces. Add salt to taste and after adding 3-4 tbsp of water, cook the vegetables till they become soft.
Pour oil in a pan and heat. Put Rie in hot oil, once Rie is fried add curry leaves and fry. Put the tomato paste and fry till oil starts to float over the spices. Now add Sambhar spices and fry for 1 minute.
After all the pressure escapes from the cooker, open its lid and mash the dal. Add the fried tomato spices and put water according to how thick you want the Sambhar. Also put in salt and the tamarind paste then mix. Once Sambhar comes to boil cook it for another 3-4 minutes. Sambhar is ready.
Take out Sambhar in a bowl garnish with green coriander leaves. Serve Sambhar with Idli, Dosa or your favorite dish and enjoy.
If you want Sambhar with onions in it then after adding Rie and curry leaves put one finely chopped onion. Fry onion till it turns light pink then add tomato and chilli paste and fry. Now follow the rest of the procedure to make Sambhar.