Set the Instant Pot to sauté mode and heat the oil or ghee.
Add cumin seeds, green chilli, curry leaves, garlic, and asafoetida.
Add chopped onion and cook for about 2 minutes until lightly softened.
Add tomato and spices, and cook for another 2 minutes.
Add the washed dal and water. Stir well to combine.
Seal the lid and cook on High Pressure for 5 minutes.
Allow 5 minutes natural pressure release, then release remaining pressure.
Stir the dal well (it may look separated at first but will combine.)
Garnish with fresh coriander and serve.