Creamware cheap, good-quality, mass-produced creamware to Europe had a similar impact on Continental tin-glazed faience factories. By the 1780s Josiah Wedgwood was exporting as much as 80% of his output to Europe. Creamware is made from white clays from Dorset and Devonshire combined with an amount of calcined flint. This body is the same as that used for salt-glazed stoneware, but it is fired to a lower temperature (around 800 °C as opposed to 1,100 to 1,200 °C) and glazed with lead to form a cream-coloured earthenware. The white clays ensured a fine body and the addition of flint improved its
Creamware resistance to thermal shock during firing, whilst flint added to the glaze helped prevent crazing. Creamware was first produced some time before 1740. Originally lead powder or galena, mixed with a certain amount of ground calcined flint, was dusted on the ware, which was then given its one and only firing. This early method was unsatisfactory because lead powder produced poisoning among the potters and the grinding of flint stones caused a disease known as potter's rot. Around 1740 a fluid glaze in which the ingredients were mixed and ground in water was invented, possibly by Enoch Booth of Tunstall,