A process for applying at least one layer of material on a metallic object base body of a kitchen appliance includes providing a fibrous material having carbon fibers added to the at least one layer of material before, after, or during the application of that layer. The process further includes subsequently hardening at least one layer of material. After the hardening, there is a rough surface with spatial frequency fractions ranging from 3 μm−1 to 1000 μm−1. The at least one layer of material defines a top free surface, and the carbon fibers have fiber ends sticking out of the top free surface. The process further includes producing the rough surface as a free coating surface having self-cleaning and/or anti-adhesive properties.