Higher feldspar content (70–85%) mixed with quartz and a small amount of kaolin for aesthetic translucency.

Acts as a "flux," melting during firing to create a glassy matrix that bonds the other ingredients together, making the final piece non-porous (vitrified).

Typically 50% kaolin, 25% quartz, and 25% feldspar.

The foundational ingredient. It provides structural integrity and maintains the white color at high temperatures.