Mole without sprinkles

4 1/2 cups chicken broth or 4 1/2 cups vegetables 3 tablespoons olive oil 1 cup onion , finely chopped 3 tablespoons garlic , chopped 1 teaspoon dried oregano[...]

3 guajillo chilies, stemmed and seeded 1 ancho chili , stemmed and seeded 1 medium white onion, peeled and halved 4 garlic cloves , peeled 4 medium[...]