Press the sauté button then add the oil and allow it a minute to heat up. Once the oil is hot, add the cumin seeds and serrano pepper to the pot. When the cumin seeds turn brown, add the remaining ingredients (I don't even bother mixing).
Secure lid, close the pressure valve and cook for 4 minutes at high pressure.
Open the valve to quick release any remaining pressure.
Mix well, garnish with cilantro and serve.