Creamware printers to Josiah Wedgwood by 1763, for example. By 1760 creamware was often enamelled for decoration, using a technique adopted from the early porcelain industry. This consisted of painting overglaze on the ware with pigments made from finely powdered coloured glass and then firing again to fuse the enamel to the ware. The varied enamel colours did not fuse at the same temperature so several firings were generally needed, adding to the expense. There were approximately 130 potteries in North Staffordshire during the 1750s, rising to around 150 by 1763 and employing up to 7,000 people – a large number
Creamware to outside specialist enamellers or transfer-printers for decoration – decoration in-house was only gradually adopted. For this reason, several manufacturers usually shared the same decorator or printer and tended to use the same or very similar patterns. Collectors, dealers and curators alike were frustrated in their efforts to ascribe pots to individual factories: it is frequently impossible to do so. Archaeological excavations of pottery sites in Staffordshire and elsewhere have helped provide some better-established typology to enable progress in attribution. Italian versions of creamware were known as terraglia, or "creta all'uso inglese" ("earthenware in the English manner"). They were produced