Opus Aeternum: The Neverending Boil (Soul Barrel x Afro Caribbean Brewing Co)An Extreme Barrel Aged Barleywine collaboration with Afro Caribbean Brewing Co. This ambitious beer sets a new world record for the longest boil ever. Opus Aeternum was boiled for over twenty hours across six days, creating unparalleled depth, color, and intensity through profound Maillard reactions. It was then aged for over a year in a single bourbon barrel, reaching 17. 5% abv. An Extreme Beer & Brewing Process Inspired by historical brewing