Add the mustard seeds and cumin seeds. When they crackle add asafoetida, curry leaves and ginger garlic paste. Saute till the raw flavor of the ginger and garlic goes away.
Add the onions and saute till translucent.
Add the chopped tomatoes and cook till they are soft.
Now add all the spices and salt and mix them well and saute them for a minute.
Drain the soak dal and add to the pan. Roast it for a minute.
Add two cups of water, stir the mixture and pressure cook for four whistle fast heat and one whistle on slow heat.
The dal is ready. Garnish with coriander and serve.
Serve it with the roti of your choice.
I make this dal directly in the pressure cooker.You can also cook the dal first then add the fried tomatoes, onions and spices to it.I like to cook it in pressure cooker along with other spices as the spices blend nicely and you get a richer taste.If water remains in the dal after it is pressure cooked then simmer it for some more time till the extra water boils off and till you get the required consistency of the dal.