Prep the Chiles: Start by rehydrating the dried chipotle chiles. Place them in a bowl with warm water and let them soak for at least 30 minutes, or overnight if possible. Once softened, remove the stems and seeds (if you prefer a milder dish), and chop the chiles.
Sauté the Aromatics: Set your Instant Pot to the "Sauté" function. Add 1 teaspoon of oil, allowing it to heat up slightly. Add the sliced onion and cook until it becomes translucent, about 3-4 minutes. Stir in the minced garlic and cook for another minute until fragrant.
Cook the Tomatoes and Chiles: Add the chopped tomatoes and the rehydrated chipotle chiles to the pot. Cook for 5 minutes, stirring occasionally, until the tomatoes start to break down and release their juices.
Add the Liquids and Chicken: Pour in the chicken broth, orange juice (if using), and lime juice. Stir in the cooked chicken, ensuring it’s evenly coated with the sauce. Season with salt, pepper, and cumin.
Pressure Cook: Secure the lid on the Instant Pot and set it to "Pressure Cook" (Manual) for 10 minutes. Allow the pressure to release naturally for about 10 minutes before performing a quick release to release any remaining pressure.
Shred and Finalize: Once the pressure is released, open the lid and give the tinga a good stir. If the chicken wasn't pre-shredded, use a fork to shred it directly in the pot—it should be tender and easy to pull apart. Stir in the chopped cilantro for a fresh, herbaceous finish.
Serve: Serve your Chicken Tinga over rice, in tacos, or with my Homemade Whole Wheat Tortillas. Top with sliced avocado, a squeeze of lime, or a dollop of sour cream for a complete meal.