Our spanking new Secretary of State is in Brussels. That got me to thinking. Wonder what he's having for lunch? Did they originate there? You know what I'm talking about, so I checked. Well, maybe they did... Below copied from this article
Brussels sprouts have a mysterious and puzzling history. Some writers suggest they were eaten in classical times, but according to the English food writer Jane Grigson, they are first mentioned in the city of Brusselsís market regulations in 1213. This would suggest they were being grown in the Low Countries at that time. However, not until two centuries later do they appear again, this time on the menus of Burgundian wedding feasts held at the court of Lille. At that time the powerful dukes of Burgundy controlled northern France and most of the Low Countries. After this appearance on the royal table, brussels sprouts vanish again; it seems they were never a popular vegetable, or perhaps they remained a very local specialty.