The invention discloses a multiphase detergent tablet (1), comprising a first detergent phase with at least one contact-unsuitable, in particular caustic, irritant, toxic or hygroscopic component and a second detergent phase to cover the first detergent phase, wherein the second detergent phase essentially contains no contact-unsuitable components, in particular no caustic, toxic or hygroscopic components, optionally also no irritant components and whereby the detergent tablet comprises at least three stacked layers, with a first layer (10) of the second detergent phase; a second middle layer (12) of the first detergent phase and a third layer (14) of the second detergent phase, wherein at least a part of a region of the contact-unsuitable first detergent phase that is not covered by a layer of the second detergent phase is provided with a water-soluble protective film. The invention further describes a method of manufacturing such a multiphase detergent tablet (1) and its use to clean kitchen appliances, particularly in commercial kitchens.