Tinga De Pollo

• 1 pound (455 grams) skinless, boneless chicken breast
• 2 large white onions, 1 halved and 1 sliced
• 6 garlic cloves, 3 whole and 3 sliced
• 1 tablespoon salt, plus more to taste
• 3 tablespoons vegetable oil
• 4 dried or canned chipotle chiles, chopped to a paste
• 9 plum tomatoes, roughly chopped

1. In a medium pot, combine the chicken, onion halves, whole garlic cloves, and 1 tablespoon of the salt. Add water to cover and bring to simmer over medium-high heat. Simmer, uncovered, until the chicken is cooked through, 30-40 minutes, skimming occasionally to remove impurities. Remove the chicken from the broth and let rest until it is cool enough to handle. Using your hands, pull or shred the chicken and reserve. Strain and reserve the broth as well.
2. In a medium to large pot, heat the oil over medium heat. Add the sliced onion and garlic and cook until translucent, about 5 minutes. Add the reserved shredded chicken, the chipotle chiles, tomatoes, and 1 cup (240 ml/8 fl oz) of the chicken broth (reserve the rest for other preparations). Cook until the tomato breaks down and changes to a brick color, 5-10 minutes. Season to taste with salt. Add some more cooking broth if necessary; it should be a bit soupy. Serve hot or let cool and refrigerate for up to 1 week or freeze for up to 1 month in an airtight container.

skinless, white onions, garlic, salt, vegetable oil, chiles, tomatoes

Taken from food52.com/recipes/80894-tinga-de-pollo (may not work)