por·ce·lain (pôrs-ln, pr-, pôrsln, prs-)
1. A hard, white, translucent ceramic made by firing a pure clay and then glazing it with variously colored fusible materials; china.
2. An object made of this substance.
Porcelain is a material of choice for high quality coffee cups, china, coffee filter holders etc. It retains heat well, and also is easy to clean and is stain resistant. I love my porcelain coffee filter holder.