Fourth Release in 2019 Barrel-Aged Series is an Imperial Brown Ale Brewed with Sumatra Coffee
Aged in Bourbon Barrels in the Caves Below Grand Rapids

GRAND RAPIDS, Mich., July 22, 2019 – Founders Brewing Co. has announced that Underground Mountain Brown will be the fourth release in the 2019 Barrel-Aged Series. Underground Mountain Brown was first released on draft as a taproom-exclusive several years ago under the name “Barrel-Aged Sumatra Mountain Brown” and quickly developed a passionate fan-following. As the name implies, it is a barrel-aged version of the brewery’s since-retired imperial brown ale, Sumatra Mountain Brown. Underground Mountain Brown (11.9% ABV) features a team of malts which complement the bold Sumatra coffee perfectly while time spend immersed in oak creates layers of depth and complexity. The Sumatra coffee is roasted in Grand Rapids by local coffeehouse, Ferris Coffee & Nut.

“We first released this beer in the taproom as Barrel-Aged Sumatra Mountain Brown and it was an immediate hit,” said Co-Founder and President, Dave Engbers. “Over the past few years, our fans have been very vocal about asking us to bottle and distribute it and we’re so happy to make it happen. The Barrel-Aged Series is a great chance for us to bring out some of these taproom fan-favorites to a larger audience and we can’t wait to hear what everyone thinks.”

Click here to view photos of Underground Mountain Brown

Underground Mountain Brown will be available in both the Grand Rapids and Detroit taprooms beginning on August 16 and will start shipping out to other distribution states later in August. It will be available on draft, in 4-packs of 12oz bottles and 750mL bottles.

Underground Mountain Brown is preceded by Más Agave, KBS and Backwoods Bastard in the brewery’s 2019 Barrel-Aged Series. It will be followed by CBS in November. Please reach out to Amanda Davis for more information and samples.

About the Barrel-Aged Series
Crafting legendary barrel-aged beers is an exercise in patience. We start by brewing complex, world-class beer worthy of time in a barrel. Then, our experience and years spent mastering our craft means we know exactly when it’s been aged to perfection. After one sip, you’ll know – it was worth the wait.

About Founders Brewing Co.
Established in 1997 by two craft beer enthusiasts—Dave Engbers and Mike Stevens—with day jobs and a dream, Founders Brewing Co. brews complex, in-your-face ales, with huge aromatics and tons of flavor. Founders ranks among the top 10 largest craft breweries in the U.S. and is one of the fastest growing. The brewery has received numerous awards from the World Beer Cup and the Great American Beer Festival and RateBeer and BeerAdvocate users often rate its beers among the best in the world. A proud sponsor of chasing the American dream, Founders launched the Chase Your What If campaign in January 2019 to inspire all beer fans to live life to its fullest. Located in downtown Grand Rapids, Michigan, Founders is a member of the Michigan Brewers Guild. For more information, visit or follow Founders on Twitter, Facebook, Instagram and YouTube.

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