In a food processor, puree the onion, bell pepper, garlic, jalapeño, and cilantro.
In a large stock pot, heat ¼ cup of olive oil. Add the onion puree and cook over moderate heat, stirring occasionally, until soft.
Stir in corn masa flour, basil, oregano, cumin, paprika, chili powder, and black pepper and cook, stirring, until the spices smell toasty.
Add the broth, tomatoes, chicken, corn, chicken base, wine, and 6 cups of water. Bring to a boil, then reduce the heat to low and simmer, stirring often, until the soup is flavorful and has reduced slightly.
Ladle the soup into individual serving bowls, top with fried corn tortilla strips, shredded cheddar cheese, and a dollop of sour cream. Enjoy!