Mortaria were produced in this fabric. As implicit in the common name, our single example is white (7.5YR 8/1) with cream (10YR 8/2) surfaces. In samples outside our collection, however, the mortaria can have a darker or thin blue-grey core; otherwise the fabric can appear grey-white to brown-cream or, occasionally, orange-brown (L Rollo, pers comm). Nevertheless, the white vessels are by far the most common.
Darling, M J, 1993 The Roman pottery, in Caister-on-Sea: excavations by Charles Green 1951–1955 (M Darling with D Gurney) East Anglian Archaeol 60, 153–218
Hartley, K F, 1985c The mortarium fabrics and The mortaria, in Excavations at Brancaster 1974 and 1977 (J Hinchliffe with C S Green), East Anglian Archaeol 23, 98–100 and 116–23JR Perrin holds an archive reports for the Stibbington kilns excavated by J-P Wild and G Dannell