Start the instant pot on SAUTE mode and heat oil in it.
Add asafetida, cumin seeds, green chili and ginger.
Saute for 30 seconds then add diced onion.
Saute until onions are translucent.
Now add tomatoes and saute until soft and mushy.
Add all the spices except garam masal and lemon juice, mix them and add lentils.
Wash the lentils before adding.
Press CANCEL and close the instant pot lid with vent in sealing position.
Press MANUAL or PRESSURE COOK mode for 0 minutes.
pressure release naturaly(NR)
When float valves pops down, open the lid and add chopped spinach. Press SAUTE mode again, let it simmer for approximately 2 minutes or until the dal starts boiling and spinach is mixed with the lentils.
Now switch off the IP, add garam masala and lemon juice.
Spinach dal is ready to be served.