In the samba de roda of the Bahian Recôncavo, the old sambadeira women (and a few men, as well) played the plate-and-knife (in Portuguese, prato-e-faca), using an enamel plate and a metal knife with a sharp edge. The specific sonority of this instrument comes from the metallic sound of the plate, which is boosted by the holes in the enamel, offering a number of different sounds. The knife is dragged back and forth or rubbed against the plate, but this can be modified with regular or improvised accents; this sound can also offer a nice counterpoint or rhythmic-sonorous complement to tambourines, with the knife hitting the edge of the plate.
The kitchen, and the creative tools found therein, became a metaphor for the "supposed" place for blacks: at the back of the house, where the whites didn't go. Throughout the history of Brazilian music, it became synonymous with musical creativity, improvisation, spontaneity, and musical entertainment in the black community.