This soup can either be made vegetarian or with chicken broth. It is a different twist on Mexican soup, but is easy and delicious. This doesn't make much, so you will probably need to double the recipe for company.
Add the chicken or vegetable broth, water, and 4 diced corn tortillas. You can also just tear the corn tortilla's into pieces with your hands if desired. Increase heat to high, bring mixture to a boil, lower heat and cook 10-15 more minutes. Set aside for about 10 minutes to allow the soup to cool somewhat.
Puree the mixture in batches in a food processor or blender.
Return mixture to the stove top and reheat. Check for salt.
Ladle into bowls and if desired, garnish with diced avocado, grated cheese and fried corn tortilla strips.