A standard range of culinary vessel-forms manufactured in two different fabrics and widely imitated. BB1 (black-burnished ware Category 1), was black, gritty, hand-made, mainly in Dorset, and widely distributed from c. AD 120 to the late 4th century AD. BB2 (black-burnished ware Category 2) was greyer and finer, with a silvery finish, wheel-thrown in the Thames Estuary area, and widely exported from c. AD 140 to the mid 3rd century AD.