Step 1
Heat the oil in a large stockpot over medium heat. Stir in the onion, celery, carrots, potatoes, and garlic, and cook 5 to 10 minutes. Add parsley, cilantro, tomatoes, tomato juice, clam juice, white wine, basil, oregano, thyme, chili powder, cayenne pepper, salt and black pepper. Reduce heat and simmer for 2 hours.