The decoration on this serving bowl is made using a process called mishima. After the bowl has been completely formed and is hard leather hard, I use a very thin needle point tool to scratch the scalloped border. Once I have drawn the whole design, I load up a brush with black underglaze and paint over the design I have scratched. After the underglaze dries on the surface, I use a damp sponge to wipe excess off the surface. This leaves underglaze laid only into the design I carved. The bowl is finished with a simple clear glaze.
I love how graphic the line work ends up after firing. The clear glaze moves the black underglaze a bit, leaving a surface that reminds me of a monotype print.