The Historical Beer category contains styles that either have all but died out in modern times, or that were much more popular in past times and are known only through recreations. This category can also be used for traditional or indigenous beers of cultural importance within certain countries. Placing a beer in the historical category does not imply that it is not currently being produced, just that it is a very minor style or perhaps is in the process of rediscovery by craft brewers.
The entrant must either specify a style with a BJCP-supplied description from the list below, or specify a different historical beer style that is not described elsewhere in these guidelines. In the case of a style that has changed substantially over the years (such as Porter or Stout), the entrant may specify an existing BJCP style as well as an era (e.g., 1820 English Porter). When the entrant specifies any style not on the BJCP-supplied list, the entrant must provide a description of the style for the judges in sufficient detail to allow the beer to be judged. If a beer is entered with just a style name and no description, it is very unlikely that judges will understand how to judge it.