Gypsy brewers... brewers without a home. These guys are the ultimate beer pirates, they spend all their time dreaming up great beers and then hi-jack some other brewery with spare capacity to whip up their recipes. Smart we recon. See the definition from Wikipedia below.
Gypsy brewery - Wikipedia
A gypsy brewery does not have its own equipment or premises; it operates on a temporary or itinerant basis out of the facilities of another brewery, generally making "one-off" special occasion beers.[4] The term may refer to the brewmaster, or to the brand of beer. The trend of gypsy brewing spread early in Scandinavia.[5] Their beers, and collaborations later spread to America and Australia.[6] Gypsy brewers typically use facilities of larger makers with excess capacity.[6] Often, their beers are made with herbs, spices, and fruits, use experimental styles, are high in alcohol, or are aged in old wine or liquor barrels.[6]
Prominent examples include Pretty Things, Stillwater Artisanal Ales, Gunbarrel Brewing Company, Mikkeller and Evil Twin.[7] For example, the "legendary"[8] One of Mikeller's founders, Mikkel Borg Bjergsø, has travelled around the world between 2006 and 2010, brewing more than 200 different beers at other breweries.[9]