Abstract: An appliance includes at least one worktop formed from at least one substrate made of a monolithic glazing material and of area larger than 0.7 m2. The substrate has a luminosity L* lower than 10, a haze lower than 30% and a light transmission TL lower than 10%. The appliance also includes at least one light source to materialize one or more zones or one or more elements or displays of the substrate, the at least one light source being located under the substrate and being hidden thereby when the at least one light source is turned off. The appliance also includes at least one interface for communicating with at least one element of the worktop and/or wirelessly with at least one external element. The appliance does not include any heating elements.