Start by turning your Instant Pot to the "Sauté" mode. Add the avocado oil (or olive oil) and allow it to heat. Once hot, add the sesame oil if using. Toss in the diced onion and sauté for about 3-4 minutes, or until translucent. If you're skipping the onion for a Low-FODMAP option, you can proceed to the next step.
Next, add the chopped button mushrooms to the pot. Sauté for an additional 3 minutes until they release their moisture. Then, add the ground turkey to the pot. Use your spatula to break it up, stirring until it’s browned evenly. This should take about 5-7 minutes.
Stir in the minced garlic (if using), fish sauce (if using), coconut aminos, onion powder (if using), mustard powder (if using), and sea salt. Mix well to ensure the turkey and mushrooms are evenly coated with the seasonings.
Secure the Instant Pot lid, ensuring the valve is set to "Sealing." Set the pot to cook on "Manual" or "Pressure Cook" for 5 minutes. Once the cooking time is done, carefully perform a quick release by turning the valve to "Venting."
While the mixture is cooking, rinse the romaine hearts and gently separate the leaves. You’ll want to use the larger outer leaves as the wraps.
Once the pressure has been released, scoop the turkey mixture into the lettuce leaves. Top with optional minced chives and grated carrots for added crunch and flavor. Serve immediately and enjoy the fresh, vibrant tastes!