Dry roast 1 tsp of whole pepper in a small pan until nice aroma comes. Cool it down and grind in a blender/mixie to a coarse powder.
Chop onions, garlic, green chilies and tomatoes finely . Set aside. Wash toor dal thoroughly 2-3 times and soak it in water for 5 minutes.
Take the soaked toor dal in a pressure cooker, add 1.25 cups of water, chopped onions, tomatoes, green chilies, garlic,hing, turmeric powder and required salt. Close the lid of the pressure cooker and pressure cook it for 3 whistles in medium flame.
Once pressure released , open the cooker. Mash it slightly using a spoon.
Heat ghee in a pan and add cumming seeds. Fry it until cumin seeds cracks. Then add curry leaves, red chilies, freshly grounded black pepper powder and saute them for a minute. switch off the flame once done.
If the dal is watery, boil it in medium flame for 3 minutes or until it becomes thick. Dont boil it too much as cooking the dal too much, spoils its taste. Once the dal becomes slightly thick, add tempered items and give a quick stir. Switch off the flame once done and garnish with chopped coriander leaves