Brewing dark sour beer means guiding roasted malt and lactic acid bacteria through a careful fermentation dance that produces rich, complex beers balancing coffee, chocolate, and tart fruit notes. The process typically takes 6-12 months from grain to glass and requires managing two fermentation stages: a primary ale fermentation followed by extended souring with Lactobacillus or Pediococcus, often alongside Brettanomyces. Unlike conventional sour brewing that relies on pale malts to let acidity shine, dark sours demand precise malt selection to avoid overwhelming roast bitterness that clashes with tartness.
This hybrid style has …









