A buttery was originally a large cellar room under a monastery, in which food and drink were stored for the provisioning of strangers and passing guests. Nathan Bailey's An Universal Etymological English Dictionary gives "CELLARIST – one who keeps a Cella, or Buttery; the Butler in a religious House or Monastery." As the definition in John Stevens's The History of the Antient Abbeys shows, its initial function was to feed and water the guests rather than monks: "The Buttery; the Lodging for Guests". In a monastery a buttery was thus the place from which travellers would seek 'doles' of bread and weak ale, given at the exterior buttery door. The task of doling out this free food and drink would be the role of the butterer. At larger monasteries there would also be a basic hostelry, where travellers could sleep for free. Later the term buttery was also applied to a similar stores-room in a large medieval house, which might or might not be a cellar, and in which the buttery served the lord and his household rather than only passing travellers. In both its uses, a buttery is to be distinguished from the butter and lard-house, and the kitchen, a hostelry, or the refectory for guests or the dining hall for the inhabitants.
Etymology
In the Middle Ages, a buttery was a storeroom for liquor, the name being derived from the Latin and French words for bottle or, to put the word into its simpler form, a butt, that is, a cask. A butler, before he became able to take charge of the ewery, pantry, cellar, and the staff, would be in charge of the buttery. However, the origin of the word is extremely complex, and much that has been written on the subject is faulty.
Location
After the dissolution of the monasteries, the buttery in large houses and colleges became a place for barrels, bottles, or butts of alcoholic drink, and from which they were brought up and served into the Great Hall. The buttery was then situated to one side of the screens passage, which sectioned off the low end of the Great Hall. The screens passage generally had two or three doors on the side opposite its entrances into the Great Hall, which led, respectively, to the buttery, kitchen, and pantry, each of which formed separate household departments.
Function
In a large house, the buttery's principal function was storage of wine and its preparation for serving. Candles were also dispensed from the buttery as was beer to those lower members of the household not entitled to drink wine. Today in colleges in Cambridge, Dublin, and Oxford, drinks are served from the "Buttery Bar". The buttery generally had a staircase to the beer cellar below. The wine-storage area of the buttery, in keeping with the higher value of its contents, was often more richly decorated to reflect the higher status of its function.
Role of the Butler
Later the monk butterer became the smartly suited "butler" that we know today, the household officer in charge of the buttery, and possibly also its provisioner. In the royal household the "Marshal of the Buttery" was often a post discharged under the feudal land tenure of grand serjeanty. In less important households such an officer was termed the yeoman of the buttery. Later, as household staff in the great houses became reduced, the butler also became required to personally serve wine to his lord and guests at banquets.
Decline
From the mid-17th century, as it became the custom for servants and their offices to be less conspicuous and sited far from the principal reception rooms, the Great Hall and its neighbouring buttery and pantry lost their original uses. While the Great Hall often became a grand staircase hall or large reception hall, the smaller buttery and pantry beyond the screens passage were often amalgamated to form a further reception or dining room.