A method for producing a fermented milk, said method comprising: step (1) for preparing a fermented milk mix from a starting milk materialstep (2) for sterilizing the fermented milk mix by heating andstep (3) for adding a starter to the heat-sterilized fermented milk mix and fermenting the same. The aforesaid method, whereby a fermented milk with good qualities, namely, showing controlled physical changes (occurrence of water separation, an increase in the diameter of milk protein grains and roughening of the texture caused thereby) accompanying the coagulation of milk proteins during refrigerated storage or distribution can be produced, is characterized by comprising at least one treatment selected from (A) to (C):treatment (A) comprising, in step (1), adding glucose oxidase to the starting milk material, which contains a substance that is available as a substrate for glucose oxidase, and then preparing the fermented milk mixtreatment (B) comprising, before step (3), adding glucose oxidase and a substance that is available as a substrate for glucose oxidase to the heat-sterilized fermented milk mix andtreatment (C) comprising, after step (3), adding glucose oxidase and a substance that is available as a substrate for glucose oxidase to the fermented milk.La présente invention concerne un procédé de production de lait fermenté. Ledit procédé consiste (1) à préparer un mélange de lait fermenté à partir dune matière première à base de lait (2) à stériliser par chauffage le mélange de lait fermenté et (3) à ajouter un ferment lactique au mélange de lait fermenté stérilisé à chaud, et à le faire fermenter. Le procédé susmentionné, par lequel il est possible de produire un lait fermenté présentant de bonnes qualités, à savoir, montrant des modifications physiques contrôlées (occurrence de séparation de leau, augmentation du diamètre des grains des protéines du lait et augmentation de la rugosité de la texture provoquée par celle-ci) qui accompagnent la coagulation des
