Fort Collins is one of America's sour-beer capitals: tart, barrel-aged ales built in oak foeders at New Belgium and in Peter Bouckaert's tiny Purpose cellar.

New Belgium's wood-cellar programme, long steered by brewmaster Peter Bouckaert, made La Folie one of the defining American sour ales and put a hall of oak foeders in the middle of the Linden Street brewery tour. When Bouckaert left after 21 years, he stayed in town, opening Purpose Brewing and Cellars on South Mason Street to blend four-hectolitre batches with fruit, spice and barrels. Between the two, Fort Collins offers sour beer at both industrial and jewel-box scale.

2 editor picks for Wood-aged sour ale in Fort Collins, ranked by editorial score. All Fort Collins signature dishes · Wood-aged sour ale across every city.