Combine beef, water, beans, salt, Accent and bay leaves in a deep kettle. Bring to boil; skim. Cover; simmer two hours. Add Tabasco, onion, parsley, celery, cabbage, carrots, and tomatoes. Simmer 25 minutes longer or until fresh vegetables are tender. Add zucchini, peas and vermicelli; simmer 15 minutes longer. Garnish with grated Parmesan cheese, if desired.