A pattern set into the clay
Korean inlaid celadon turns decoration into part of a vessel’s surface rather than an image simply painted on top. The potter cuts a design into the clay, presses pale or dark slip—a liquid clay mixture—into the recesses, then scrapes away the excess. The pattern remains in the grooves, level with the surrounding surface.
That flush finish depends on control. Carve too shallowly, and the contrasting clay may not form a clear line; carve too deeply, and the vessel’s wall can be weakened. The slip must fill the cuts cleanly, without smearing onto the areas meant to remain plain.
Color beneath the glaze
The celadon glaze goes over both the vessel and its inlaid design. During firing, the glaze melts into a glassy coating, while the dark and light slips remain visible through it. The result is not the sharp, raised edge of an applied decoration: the pattern appears embedded in the smooth, often softly colored surface.
This method made fine designs possible without relying on brushwork alone. Lines, bands, and repeated motifs could be planned as a network of cuts and fills, with the contrast doing the visual work. The design survives because colored clay is built into the body of the pot before the glaze seals it.
