throughout the European Union. the use of a name to a specific area. That means that a Radicchio de Verona grown in France cannot legally use the name Verona. With these restrictions the different radicchios appear on French menus and in the markets just as a radicchio or radicchio rouge.
N.B.: Cheddar, a village in Somerset in the UK never tried to limit the manufacture of Cheddar Cheese to its original area. Cheddar has no IGP and consequently Cheddar Cheese may made anywhere. The best Cheddar cheeses no longer come from Cheddar.