Abstract: In the process of preparing deep-fried potato products such as chips or French fries, the conventional blanching step comprising washing and pre-heating before the actual cooking in oil is replaced by novel blanching step. In this process step, the cut potato products are submersed in water and subjected to the passage of electric current of 50-60 cycles per second supplied to the water bath by means of electrodes immersed therein, during which treatment the potato products are heated to a suitable high temperature such as the boiling point.

Abstract: The present invention relates to a method and device for the processing of organic substances, particularly the preparation of comestibles such as potatoes, with direct passage of electric current in an electrolyte. The method is distinguished in that the electric characteristics of the current passage processing, e.g. the voltage applied, are varied during the processing period and that the processing is divided into a number of stages with mutually dissimilar electric characteristics.

Abstract: A grilling apparatus for heating sausages, hamburgers, and the like, has a base and a hinged cover, with heating electrode plates in the base and cover, contoured in accordance with the item of food to be heated. The electrode plates in either the base or cover are resiliently mounted, as by means of springs, so that uniform pressure is applied over the entire surface of the item of food being heated to insure uniform cooking. The apparatus is of modular design so that different electrodes or combination of electrodes may be inserted according to the food items to be heated. Spring strength is selected to apply optimum pressure during cooking of the various foods. A timer and voltage regulator are provided to control duration and temperature of cooking.