• Prep: Slice onion and bell pepper into thin slices. Turn Instant Pot on Sauté. Wait 30 seconds and add oil.
• Add sliced onions and bell peppers and sauté for 30 seconds. Then, add red wine vinegar and sauté another 30 seconds. Add half of the salt & pepper, so ¼ teaspoon each and stir well. Remove in a bowl and keep aside. This way they maintain their crunch. You can choose to leave them in there too. Turn Off the Instant Pot.
• Mix together salsa and spices in a cup.  Add water to the instant pot and then the chicken breasts.  Pour the salsa mix over it to coat well with the sauce. Putting the chicken first reduces the chances of the sauce sticking at the bottom. Close lid. Set valve to Sealing position. Cook on Manual (high)/Pressure Cook for 8 minutes. If your chicken breast is too thick, increase the time to 10 minutes.
• Open the lid after naturally releasing pressure for 10 minutes (NPR 10). Remove chicken in a platter. Using two forks shred the chicken. Meanwhile, add cocoa powder in the sauce and stir well.
• Add shredded chicken, onions and peppers in the sauce and stir well. Serve with warm tortillas of your choice and top with your favorite topping like cheese, sour cream, salsa and jalapeños.

Stovetop recipe

• Prep: Slice onion and bell pepper into thin slices. Heat a sauce pan on medium high heat.  Wait 30 seconds and add oil.
• Sliced onions and bell peppers go in the pan now, sauté for 30 seconds. Add red wine vinegar and sauté another 30 seconds. Add half of the salt & pepper, so ¼ teaspoon each and stir well. Remove in a bowl and keep aside.
• Add salsa, water and spices in the sauce pan and stir well. Add chicken breast and coat well with the sauce. Reduce the heat to medium. Cover with a lid. Cook for 15 minutes on medium heat or till chicken is tender and pulling apart easily with two forks. Stir every 5 minutes to ensure that the chicken or sauce doesn't stick and burn at the bottom.
• Remove the lid. Remove chicken in a platter. Using two forks shred the chicken. Meanwhile, add cocoa powder in the sauce and stir well.
• Add shredded chicken, onions and peppers in the sauce and stir well. Serve with warm tortillas of your choice and top with your favorite topping like cheese, sour cream, salsa and jalapeños.

Stovetop Pressure cooker (Hawkins or Prestige brand) recipe

• Follow step 1 and 2. For step 3: Cook on medium-high heat till 1st whistle. Reduce heat to medium and cook for 4-5 minutes. Let the pressure release naturally for at least 10 minutes. Follow remaining instructions for assembling tacos.