* Wash and cut the fresh spinach into strips. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Melt the butter in a soup pot; add the onion, carrots and celery. Cook over medium heat, stirring often, for 5 minutes. Add the broth and tomatoes and simmer another 10 minutes. Add the spinach and cook for an additional 1 minute. Season with salt and pepper to taste.