Start with Toor dal and wash it. You don't have to use a pressure cooker but it will dramatically cut your cooking time!
Add salt and haldi and then set to cook. Once the pressure builds up turn the heat down to low and allow to cook for 5mins. Then let it slowly cool down with the stove off. (atleast 15mins).
Prepare the tadka with some cumin in oil. Add chili and heeng (asafoetida).
Stir and serve with rice!