A restaurant in Sapporo, Japan, tells its customers to clean their plates. If they order the signature dish, which is all you can eat, they must eat it all or pay a fine which goes to fishermen.

Clean your plate. You heard that from your mom. Now a restaurant in Sapporo, Japan says that to its customers. If you order their signature dish, it’s all you can eat – a bowl of rice topped with salmon roe – you must eat it all or pay a fine, which goes to hardworking fishermen. But one server says that hardly ever happens because most diners clean their plates.

2013 NPR