Final answer:
Restaurants must provide a warning when serving Caesar salad with dressing made with raw eggs due to the potential risk of foodborne illness.
Step-by-step explanation:
When a restaurant serves a Caesar salad with dressing made with a raw egg, the restaurant is required by health regulations to provide customers with a warning about the potential risk of foodborne illness. Consuming raw or undercooked eggs can expose individuals to bacteria such as Salmonella, which can cause serious illness. Therefore, it's essential for restaurants to inform their customers about the raw ingredient in the dressing so that they can make an informed decision about consuming the product.