The invention refers to a mechanical food treatment processor comprising a driving block topped by a bowl unit. The driving block comprises a motor connected to a rotation driving device configured to move a food treatment tool. The bowl unit comprises a functional element electrically supplied via an electric circuit connecting the bowl unit and the driving block. The electric circuit comprises at least two contacts between the bowl unit and the driving block. At least one of the contacts is achieved by the contact of two electrical contact surfaces, respectively located on an external surface of the bowl unit and on an external surface of the driving block. Each of the two electrical contact surfaces is substantially leveled with the external surface of the bowl unit or of the driving block. Such a configuration facilitates the cleaning of the external surfaces of the processor.
