Sgraffito sgraffiti

A technique used both for wall decoration and ceramics, it is the application of layers of tinted plaster in contrasting colors to a moist surface and then scratching an outline drawing on it. The technique has been used in Europe since classical times, and the term is derived from the Italian workd "sgraffiare", which means to scratch. Source: Wikipedia, http://en.wikipedia.org/wiki/Sgraffito