Brewing was an important part of the medieval peasant economy. There are different views, however, about the nature and position of those who brewed. It has been suggested that brewing was an integral part of the household economy, that is, at the fully developed stage of the household and family, whilst others have connected brewing with the early stages of the life-cycle of individuals, before household formation. Either as part of the household economy or before household formation, brewing may have supplemented income from agrarian activity, whether from the direct holding of land, or from wages for work on the land. Brewing may also have been a feature of the sexual division of labour within the household. Moreover, it has been proposed that brewing was more important for the household economy of cottagers and lesser landholders than for the tenants of standard holdings, who, perhaps, needed to supplement their income less than the smaller landholders. When related to the life-cycle of individuals, however, brewing may have been undertaken more consistently by those who would later acquire land and would then divest themselves of brewing as a major part of their income, although Chayanov believed brewing to relate more widely to the developmental cycle of all peasant households. His perception was that brewing would have been necessary at that stage of household development where there were many mouths to feed and many hands to perform the labour, whereas, when the siblings left the household, the supplementary income from brewing would no longer be required. There are thus a number of issues involved in the question of who, in the main, brewed, and at what stage of their life-cycle they did so.