In honor of Devils Postpile’s Centennial, Mammoth Brewing Company decided to create a commemorative beverage to celebrate the occasion. Employees got so excited they threw rocks in the beer. Not just any rocks, however, but basalt – the same type of rock that makes up the Devils Postpile monument. MBC’s head brewer Jason Senior grabbed some of these rocks from alongside 395 (not from the Postpile itself!) and put them in buckets on a large barbecue. He fed the barbecue’s fire with almond wood to make the rocks super hot and smoky. After reaching a temperature over 600 degrees, the rocks were placed in the brewery’s kettle, which was then filled with wort (the liquid extracted from the mashing process during the brewing of beer). Senior likened the process to the caramelization of sugar, but with rocks. The beer was then boiled with the rocks and the normal fermentation process took place.