Press Saute on Instant Pot. Heat oil, add cumin seeds, and let them splutter.
Then add minced ginger, green chilies and saute for a few seconds until the raw smell disappears.
Add chopped onions and saute for 2 minutes or till they turn light brown.
Add the chopped green beans, potatoes, water, spices like coriander powder, turmeric, red chili powder, salt, and mix well. Ensure to scrape any spice if sticking to the inner pot to avoid a BURN alert.
Close the lid securely, and turn the vent to "SEALING". Select the PRESSURE COOK/MANUAL (High Pressure) setting and set the cooking time to 2 minutes.When the instant pot beeps, do a quick pressure release. Open the lid, sprinkle garam masala and lemon juice. Mix everything well. If there is any water, turn on Saute and cook till you get your desired consistency.
Instant Pot Potato & Green Beans are ready, serve hot with chapatis, roti & parathas.