A type of Roman pottery made by an organized industry on the banks of the River Nene west of Peterborough, by the Roman town of Water Newton (ancient Durobrivae), England, from the 2nd-4th centuries AD. (It was formerly known as Castor Ware.) The commonest shapes are drinking vessels and tumblers, made of a light clay with a dark slip, sometimes with a white decoration. Decoration was by applied scales, rouletting, or barbotine. Barbotine ornamentation is applied to pottery by squeezing a bag containing thin clay slip in the same way as a cake is iced today. It may be applied by brush or spatula as well. The best known are the Hunt Cups, showing dogs pursuing deer or hares, but human scenes also occur. It is a local ware, made in imitation of the dark, glossy Rhenish wares, and was perhaps the first fine ware to be produced locally in Roman Britain.