Cuisine, argues the author, is like language – it can be adopted, adapted or modified through time. The evidence from actual words for food is also used, together with seed assemblages and types of pottery to chronicle changing food cultures in Neolithic and later India. While some new food ideas (like African millets) were incorporated into existing agricultural practice as substitute crops, others such as the horsegram and mungbean appear to have moved from south to north with their pots (and probably the appropriate recipes) as a social as well as a dietary innovation.