Possible Clues:

• Dish including lettuce, cheese and croutons
• A scare as careless young man makes a dish
• Ruler's first-rate son leaves suitably dressed and accompanied
• Foreign areas sadly kept back in recording meal option
• Seasoned mixture of cos lettuce and croutons
• Roman emperor’s brought over a fellow’s cold dish
• Dish of lettuce, croutons, Parmesan cheese, and dressing