Heat the water or olive oil in a large saucepan over medium heat. Cook the onions for 5 to 6 minutes, then add the celery, green pepper, mushrooms, and garlic and cook for an additional 5 minutes. Add the tomatoes, tomato sauce, and tomato puree and stir until the sauce is well blended. Add the herbs, salt, and pepper and simmer, uncovered, for 30 minutes. Cook the pasta according to package directions. Remove the bay leaf from the sauce and serve with pasta. Preparation time: 1 hour *