The Tale of the Dangerous Soup - S3-E13
Question: A bowl of the soup costs $100. When a couple wants to order second servings, Jersey says there is a limit of one per customer. This does not make sense when Dr. Vink is trying to operate a successful restaurant. Jersey, a server, is probably hoping to get a tip. It would just be good business to let customers spend another $200 on soup if they wanted. Did I miss something?
Answer: The other answer here, about too much soup being potentially harmful, is basically correct. When Dr. Vink tells Nonnie and Reed about the secret of the soup, he says that a drop of the elixir can "make the pulse quicken and blood flow." In addition to that, setting a limit can make the soup seem more luxurious and exclusive.