Soak the Chiles
Remove stems and seeds from the guajillo, ancho, and chile de arbol (if using).
Place them in a bowl with hot water for about 10 minutes to soften.
Blend the Sauce
In a blender, combine the soaked chiles, 2 garlic cloves, half the onion, a bit of the soaking water (or some chicken broth), and salt.
Blend until smooth. Set aside.
Sauté the Chicken in the Instant Pot
Turn on the Instant Pot to “Sauté” mode.
Add a drizzle of oil and quickly brown the chicken on both sides. Remove chicken to a plate.
Combine Ingredients
Pour the chile sauce into the Instant Pot.
Return the browned chicken to the pot.
Add the remaining chicken broth, the other half of the onion (chopped), the remaining 2 garlic cloves, oregano, cumin (if desired), and salt and pepper to taste.
Stir gently.
Pressure Cook
Lock the Instant Pot lid and ensure the valve is set to “Sealing.”
Select the “Pressure Cook” (or “Manual”) setting and cook on High Pressure for 15 minutes.
When the cooking time ends, allow a natural pressure release for about 10 minutes, then carefully do a quick release.
Add the Hominy
Remove the lid. Take the chicken out to shred it.
Add the hominy to the pot and stir.
Return the shredded chicken to the pot. Switch to “Sauté” mode for a few more minutes to heat through.
Your Pozole Rojo de Pollo is now ready to serve!