Making Koro Sambar : Heat oil in a pan for a couple minutes and keep aside to cool. In a dry grinder, add fenugreek seeds and grind into a coarse mixture. Then add split mustard seeds into the dry grinder and coarse grind it. To a bowl, add the ground fenugreek seeds, mustard seeds, red chili powder, turmeric, asafoetida, salt and oil. Mix it all and store in an air tight container.
Cooking Dal : While you gather the ingredients together, wash and soak the dal. Using the saute mode, heat the inner pot and add the toor dal, peanuts and or cashews, salt, turmeric, ginger, kokam & 2 cups water to the pressure cooker followed by water. Give it all a stir.
Pot in Pot Rice : This step is optional. While the dal will cook in the main pot, I often place a heat safe smaller pot with rice, water & ghee on a trivet. Cover it with a steel lid or aluminum foil.
Pressure Cook : Close the lid and pressure cook for 6 minutes followed by a quick release after 5 minutes.
Prepare Temping : While the Dal are Rice are pressure cooking, in a deep bottom pan, heat ghee and add asafoetida, cumin seeds, mustard seeds, curry leaves, red whole chilies, green chilies or paste (optional), cloves, cinnamon sticks and cook until aromatic. Next add jaggery and allow the jaggery to caramalize, another way to make the flavors stand out. Then add the secret ingredient, koro sambar (recipe in recipe card) Then add the ginger and tomatoes and allow the tomatoes to soften for a couple mins. Lastly add kashmiri red chili powder & stir it.
Tempering the Dal : Open the lid of the pot and using a pair of tongs, remove the rice container and place it aside. Using a whisk, whisk the dal. You will notice a thick consistency. Add some water, a cup or more (to your preferred consistency) and tamarind pulp water (if using) to make it runny and bring it to boil. Then add the tempering and simmer for another minute or two. Adjust the salt, sweetness and tanginess.
Garnish : Garnish with chopped cilantro and some fresh lemon juice if you skipped tamarind pulp water. Enjoy the piping hot dal.