Brewer’s ToolboxABV Calculator: Optimize Alcohol Content in Homebrew by John Brewster March 23, 2025 by John Brewster March 23, 2025 3 minutes readAlcohol by volume (ABV) is the most fundamental spec of any homebrew — it determines whether you’ve made a session ale or a barleywine, affects carbonation calculations, and is legally required labeling information in most jurisdictions. Read more