Portland Psst uncovered a blog post published today by The Atlantic about Allagash’s experimentation with the traditional koelschip fermentation.
The future of American craft beer sits in a shed on the industrial outskirts of Portland, Maine. Built by the Allagash Brewing Company in 2007, the shed holds the country’s first commercial “koelschip,” a shallow, 15-barrel steel pan used to cool down beer wort–and expose the beer to naturally occurring yeasts that float in through the shed’s open stained-glass windows.