Relief: Cuerda Seca
From the Spanish meaning ‘dry cord’. In its earliest form, a thin cord impregnated with a waxy substance was laid in a pattern on the surface of the tile to contain and separate different coloured glazes. Later, the line was drawn or printed on the surface of the tile with a waxy substance containing manganese pigment. The resultant tiles have a distinctive sunken matt black line surrounding each colour in the pattern.