(as it pertains to the Catawba Valley region of North Carolina).
Potters in the Catawba Valley region (Lincoln and Catawba counties) of North Carolina formulated an alkaline glaze type for use on their stoneware pottery. This glaze was compose of clay and wood ash, as well as one of two additional silica sources: iron slag, or glass.
Raku or Raku Ware
Raku is loosely translated to enjoyment, pleasure, or ease. The term comes from Jurakutei which was a lavish palace constructed at the order of Toyotomi Hideyoshi in Kyoto, Japan.