This study examined absorbed organic residues in pottery to assess differences in subsistence practices in Roman Britain. Through this approach, we investigated foodways at a major urban site and a range of small towns, villas and farmsteads within its hinterland. The study revealed that consumption at Cirencester differed remarkably to consumption at other sites in the surrounding hinterland, with a greater contribution from pigs and/or chickens. Dairy products were a key contributor to the diet at rural sites, including a high-status villa. We contend that both findings are the result of extensification of food production. Thus, we show how reconstructing broad culinary patterns can reveal possible responses of inhabitants to the challenges of feeding the increasing population of Roman Britain.