After milking, the milk from the Montbéliardes herd of La Grange de la Haute Vallée is immediately transformed by Alain André in the cheese dairy attached to the farmhouse. The use of raw milk requires permanent compliance and control of the health standards related to hygiene and food preservation. Each cheese having its own characteristics, different parameters (curdling, molding, ripening time) and specific methods are applied for the manufacture of the various PDOs.