Abstract: A process and apparatus for cooking food wherein the food to be treated is located in a chamber where it is subjected to heat, there also being present in the chamber steam that is either separately introduced or is generated by the food as it is being heated. This steam is forced into a layer surrounding the exposed surface of the food being treated by establishing in the chamber an electrostatic field of substantially constant polarity while the food is supported on a grounded hearth. This electrostatic field is created by applying a high voltage direct current potential to a grid located above the food being treated and preferably also disposing a ground above the grid and between the grid and the roof of the chamber in which the food is being treated.