1For the sauce
Tip: I use a food processor to mince the onion, peppers, and garlic. Heat the oil in a large pot.
2Add the processed vegetable to the oil and saute about 5 minutes. Add the remaining ingredients except cilantro and bring to a boil. Reduce to a simmer and simmer about 20 minutes. Stir in the cilantro.
3For the chicken
Place the chicken breast in a slow cooker. Cover with salt, chicken stock, lime juice and half of the ranchero sauce. Cook on low for 6 hours. Remove the chicken and shred. Return the chicken to the slow cooker add the remaining ranchero sauce. cook 1 more hour.
4use it for fillings for tacos, enchiladas, nachos or tostadas