Soak the lentils in cold water overnight (or for a few hours). Drain, rinse and set aside.
Press the sauté button, add the ghee/oil and allow it to heat up for a minute. Add the cumin seeds and serrano pepper to the pot. Once the cumin seeds brown, add the dal and remaining ingredients to the pot.
Secure the lid, close the pressure valve and cook for 15 minutes at high pressure.
Naturally release pressure.
Garnish with cilantro and serve.