Exactly, "scraffito" and I spelled it all wrong.

The other method, which is more like scrimshaw, is to scratch designs into the leather hard clay, cover it with an underglaze, then trim off the top layer. The underglaze, just a colored slip usually, is left in the design and the surface is basically smooth.

I need to go look up how to spell that word...

I'm also going to correct that post a little, so I don't look like an idiot.