Abstract: A process for deep-frying material to be deep-fried in a heat transfer fluid, especially fat, includes cooking the material to be deep-fried at consecutively decreasing temperature of the heat transfer fluid. A device suitable for carrying out the process is provided in which the heat transfer fluid is recycled by means of a pump and is brought into contact with the material to be deep-fried in a deep-frying container, has a series of deep-frying chambers for cooking the material to be deep-fried with different temperatures of the heat transfer fluid. The process and device make possible an especially gentle cooking operation; in particular, the formation of acrylamide, which is hazardous to health, is reduced to a minimum.