The Danish brewery Mikkeller is world-famous for its innovative approach to craft beer. Founded by Mikkel Borg Bjergsø, the brewery does not have its own production facilities and uses the "gypsy brewing" concept – brewing in other breweries. Mikkeller is known for an incredibly diverse range of styles, including sour beers, IPAs, stouts, and experimental offerings. Their products are often the result of collaborations with other breweries and are favorites among connoisseurs worldwide.