If you are using unroasted vermicelli, dry roast the vermicelli in the instant pot itself until it turns light golden brown on Saute mode. I have used store-bought roasted bambino vermicelli for this recipe, so I did not roast. In SAUTE mode, Heat oil (or ghee). Add mustard seeds, jeera, urad dal, chana dal, and saute until dal changes into light golden brown.
Then add green chilies, ginger, curry leaves, hing, and saute for a few seconds.
Add chopped onion and saute until onion becomes light brown.
Add mixed vegetables, saute for 1-2 minutes, and then add roasted vermicelli, turmeric powder, salt, and water. Mix well.
Close the lid securely, and turn the vent to "SEALING". Select the PRESSURE COOK/MANUAL (High Pressure) setting and set the cooking time to 1 minute.
When the instant pot beeps, allow the pressure to release naturally for 5 minutes, then release any remaining pressure before removing the lid.
Lastly, remove the steel insert from the instant pot. Squeeze some lemon juice and garnish with fresh coriander leaves and freshly grated coconut (if desired). Gently fluff the vermicelli with a fork.
Serve Vermicelli Upma with coconut chutney.