Lead-glazed earthenware is one of the traditional types of earthenware with a ceramic glaze, which coats the ceramic bisque body and renders it impervious to liquids, as terracotta itself is not. Plain lead glaze is shiny and transparent after firing. Coloured lead glazes are shiny and either translucent or opaque after firing. Three other traditional techniques are tin-glazed, which coats the ware with an opaque white glaze suited for overglaze brush-painted colored enamel designs; salt glaze pottery, also often stoneware; and the feldspathic glazes of Asian porcelain. Modern materials technology has invented new glazes that do not fall into these traditional categories.
A sancai lead-glazed earthenware saddled horse statuette, Tang dynasty (618–907 AD), coloured lead glazes.
Minton majolica game pie dish, lead-glazed earthenware, c. 1875, an iconic example of High Victorian appetite for innovation with humour/whimsy, coloured lead glazes
Toby jug made by Ralph Wood the Younger, Burslem, c. 1782–1795 (Victoria & Albert Museum), coloured lead glazes.
Earthenware is glazed or unglazed nonvitreous pottery that has normally been fired below 1,200 °C (2,190 °F). Basic earthenware, often called terracotta, absorbs liquids such as water. However, earthenware can be made impervious to liquids by coating it with a ceramic glaze, and such a process is used for the great majority of modern domestic earthenware. The main other important types of pottery are porcelain, bone china, and stoneware, all fired at high enough temperatures to vitrify. End applications include tableware and decorative ware such as figurines.
Painted, incised and glazed earthenware. Dated 10th century, Iran. New York Metropolitan Museum of Art
Top section of a water jug or habb. Earthenware. Late 12th-early 13th century Iraq or Syria. Brooklyn Museum
Tea served in a kulhar, which are disposable earthenware teacups in South Asia
Terracotta flower pots with terracotta tiles in the background