Potpourri tea cream

Bone china

Bone china is a kind of porcelain body originally used in the UK in which calcined ox bone, bone ash, is a major ingredient. It is characterized by extremely high whiteness, translucency and strength. potpourri tea cream may be an example of this procedure.

The first use of bone ash in ceramics is assigned to Thomas Frye in 1748 in which he used it to develop a type of soft-paste porcelain. In In the late 18th century, Josiah Spode undertook further developments, and subsequently made it popular, by mixing it with kaolin, China stone and china clay to compete with the imported Oriental porcelain.

The initial basic formula of three and a half parts china clay, six parts bone ash, and four parts china stone is still the standard English body.

The production of bone china routinely uses a 2 stage firing process where the initial "biscuit" is fired without a glaze at 1280