Recently, a vegan customer sued Burger King because a plant-based burger he bought at a Burger King franchise was cooked on a grill also used for cooking meat.

This got me thinking: who would usually be liable for this sort of case?

Would it be...

• the franchisor (Burger King),
• the franchisee (the actual restaurant owner), or
• the employee

I'm interested in not only the answer in Florida, where this occurred, but in other places around the world too.

My question is not entirely specific to this example: I'm asking in general. If, for example, an employee cooked a vegan patty on a meat grill even though it shouldn't have been done, as per company rules, would they be liable , or the franchisee, or the franchisor?