1. Wash and peel ridge gourd using a peeler and chop into small pieces. Add these small ridge gourd pieces to a bowl of water to avoid darkening.
2. Chop onion, green chilis, and cilantro. Keep them aside.
3. On saute mode heat the oil and add mustard seeds, cumin seeds wait until they splutter.
4. Add the green chili, onion, curry leaves, asafoetida (Hing) saute for a few seconds. Then add ridge gourd cubes, turmeric, coriander powder, salt, and mix well. Turn off saute mode.
5. Place a trivet and keep a rice bowl on the trivet. Close the lid and set the instant pot on MANUAL or PRESSURE COOK for 8 min.
6. When count down is done, quick release and remove the pot which is on top. Add milk, cilantro and let it rest for 5 -10 minutes on warm mode or turn on saute mode until it becomes creamy which takes less than a minute. Serve it with roti or rice.