Firstly, Press Saute. Add oil and once it's hot, add minced garlic, ginger, onions. Saute for about 2 minutes till onions turn soft.
Next, add Thai red curry paste and saute for a minute because it enhances the flavors of the final dish.
Stir in 1 can of full-fat coconut milk and ¼ cup of water.
Close the lid. Set the pot to MANUAL/PRESSURE COOK (Low Pressure) and set the timer to 1 minute.If you do not have the low-pressure option, you can set the time to zero minutes. When the instant pot beeps, allow 5 minutes of natural pressure release and then release the remaining pressure manually.
Stir in soy sauce, brown sugar (optional), fast-cooking veggies like zucchini, colored peppers, canned baby corn, tofu, kaffir lime leaves (or lime zest), salt, and mix well.
Boil the curry on the sauté setting for 3-4 minutes. Do not overcook the veggies.
Press Cancel, add fresh lime juice and basil leaves (roughly torn). Give a quick stir.Adjust with more soy sauce, brown sugar, or lime juice. The curry thickens as it cools down. Serve Vegetarian Thai red curry Instant pot hot with steamed jasmine rice.