Methods for treating food are provided. Such methods may include the steps of: a step a) for preparing a closed chamber destined to receive the food to be treated inside it, cold generating devices which include a refrigerator circuit provided with at least one evaporator, heat generating devices which include ventilation elements able to generate a circulation of air affecting the chamber, the evaporator and the heat generating devices being associated with the chamber and at least one step b) for thermically treating the food inside the chamber supplying and/or removing heat in a controlled manner so as to keep the air temperature of the chamber within a predefined value range DeltaT1. Devices for carrying out such methods are also provided.
