Le Puy green lentil is a small, mottled, slate-gray/green lentil variety. In the US, this type of lentils may be grown and sold as French green lentils or Puy lentils. The term "Le Puy green lentil" is protected throughout the European Union (EU) under that governing body's Protected Designation of Origin (PDO), and in France as an appellation d'origine contrôlée (AOC). In the EU, the term may only be used to designate lentils that come from the prefecture of Le Puy (most notably in the commune of Le Puy-en-Velay) in the Auvergne region of France.