In a large pan set over high heat, toast the peppers 1-2 minutes or until warm and fragrant. Add the water and reduce the heat to low. Cook 10 minutes, or until peppers are soft and plump.
Add the peppers, tomatoes, garlic, cumin, and 1 cup of the cooking liquid to a blender container. Cover and blend on high until smooth.
Return to the pan and add the chicken stock. Bring to a simmer; cook 10 minutes. Stir in the apple cider vinegar and season to taste with salt.