If using unroasted vermicelli, dry roast it in the Instant Pot on Saute mode until it turns light golden brown. I used store-bought roasted Bambino vermicelli for this recipe, so I skipped the roasting step.
To begin with the Instant Pot, press SAUTE mode and heat oil or ghee. Add mustard seeds, cumin seeds (jeera), urad dal, and chana dal. Saute until the dals turn light golden brown.
Then add green chilies, ginger, curry leaves, hing, and saute for a few seconds.
Add chopped onion and saute until the 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.
Finally, 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 before serving.