According to Swiss guidelines, gruyère must be made in the region around Gruyères, Switzerland, which has produced the cheese since the 12th century. In the United States, however, gruyère can be made anywhere, according to a federal court ruling that was made public last week. It was the latest development in a long-running legal tangle between American cheese producers and producers in Switzerland and France over what makes gruyère gruyère. Listen as Tom discusses the holes in Swiss cheesemakers' legal arguments.