Imperial

Originally a term used to designate beers made for the crowned heads of Europe, but is now used by craft brewers to designate a beer that is typically higher in alcohol and possibly hop bitterness.

 Crowned Heads of Europe

Crowned Heads of Europe

"Imperial" and "Double" are used interchangeably. A beer drinker can expect an imperial or double version of a beer to be similar to an established beer style, such as IPA, but with a boosted alcohol level. A "double" version of a beer style does not mean that the beer will have twice the amount of ingredients or alcohol, but is rather an amplified version of the base style.

 Imperial Stout

Imperial Stout