Underground Mountain Brown
Founders Brewing Company

Underground Mountain BrownUnderground Mountain Brown
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Founders Brewing Company
Michigan, United States
American Brown Ale
Ranked #1
Ranked #836
4.35 | pDev: 7.13%
Nov 14, 2022
Mar 10, 2012
Underground Mountain BrownUnderground Mountain Brown
Notes: Barrel-Aged Sumatra Mountain Brown

Underground Mountain Brown is the harmonious drinking experience only achieved when our imperial brown ale, earthy Sumatra coffee and a year aging in caves below Grand Rapids comes together. A team of malts complement the bold sumatra coffee perfectly, while time spent immersed in oak creates layers of depth and complexity. A celebration of the barrel, the bean and everything in between.

30 IBU
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Photo of jopezu
Reviewed by jopezu from Georgia

4.5/5  rDev +3.4%
look: 4.5 | smell: 4.5 | taste: 4.5 | feel: 4.5 | overall: 4.5
pours a dark brown with a tan head that poofs. nose; coffee, roasted malt, cocoa, & vanilla. taste; the nose all comes through on the tongue wrapped in oak bourbon barrel notes. some ethanol, but very well controlled for 12%. medium mouthfeel & heavy carbonation. quite an easy drinker at this abv. founders knows how to do beer!
Nov 14, 2022
Rated: 4.18 by Duncian from Pennsylvania

Oct 31, 2022
Rated: 4.21 by CoryR from Oregon

Oct 15, 2022
Photo of Sandis
Rated by Sandis from Minnesota

3.28/5  rDev -24.6%
look: 4 | smell: 3.5 | taste: 3 | feel: 3.5 | overall: 3.25
2019 version poured from a 12oz. bottle into a beer can shaped glass. Coffee is up front. I didn't care for this is much as I'd hoped.
Sep 01, 2022
Rated: 4.78 by not2quick from Missouri

May 24, 2022
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Reviewed by Explorer_Bill from Kentucky

4.31/5  rDev -0.9%
look: 4.25 | smell: 4.5 | taste: 4.25 | feel: 4.25 | overall: 4.25
2020 edition poured from bottle kept in my beer fridge for the past 2 years, into a snifter. Dark brown almost black with a rusty light brown thin head leaving a narrow ring of lace. The smell is sweetened coffee and bourbon, vanilla, oak. The flavor is very much like the smell. Sweet upfront, rich roasted coffee, a slight alcohol burn that flashes a bit like a sip of bourbon. Finishes oaky, cocoa, and a bit of sweetness. Overall a very nice barrel aged beer that’s almost like sipping a bourbon and coffee cocktail. Perfect for a rainy spring evening.
May 15, 2022
Rated: 4.06 by Jkolls from Ohio

May 07, 2022
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Reviewed by Beersnake1 from California

3.99/5  rDev -8.3%
look: 3.75 | smell: 4 | taste: 4 | feel: 4 | overall: 4
2019 bottled tasted in 2022. Poured at fridge temp. Pours a nice murky brown with light brown head. Good carbonation - tiny bubbles throughout. Nose is hazelnut, chocolate, coffee, maple, and a bit of pipe tobacco. The taste is fantastic. Tons of dark coffee. I love Sumatra coffee, although I'm not sure what the roast level is here. I prefer a darker roast. Not really picking up much bourbon. Mostly dark roasted malts and coffee. Dark chocolate, burnt toffee, some dark cherries, and a leather/tobacco note. Mouthfeel is medium bodied and the aftertaste is a nice mix of sweet and bitter. Overall, a wonderful brown ale with coffee and bourbon.
Apr 29, 2022
Rated: 4.34 by SayBoom from Ukraine

Mar 24, 2022
Rated: 4.34 by Zekenyce from New Jersey

Mar 13, 2022
Rated: 4 by TMoney2591 from Illinois

Jan 21, 2022
Rated: 4 by BigIronH from Michigan

Dec 31, 2021
Rated: 4.36 by chewy6935 from Michigan

Dec 25, 2021
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Rated by HoodviewBrew from Texas

4.16/5  rDev -4.4%
look: 4 | smell: 4.25 | taste: 4.25 | feel: 4 | overall: 4
Sadly triggered a migraine. Good though.
Dec 11, 2021
Rated: 4.19 by cwm51662 from Indiana

Nov 27, 2021
Rated: 4.19 by QuintusHorace from California

Oct 31, 2021
Rated: 4.37 by JTuomi from Finland

Oct 01, 2021
Rated: 4.5 by walt5 from Delaware

Sep 23, 2021
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Rated by rawbraves from Colorado

4.76/5  rDev +9.4%
look: 4 | smell: 4.75 | taste: 5 | feel: 4.25 | overall: 4.75
Buy again!!!
Sep 21, 2021
Rated: 4.46 by Donco from Pennsylvania

Aug 29, 2021
Rated: 3.29 by sbuck from New Mexico

Aug 02, 2021
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Reviewed by TinFang from California

4.42/5  rDev +1.6%
look: 4.25 | smell: 4.75 | taste: 4.25 | feel: 4.25 | overall: 4.5
Bourbon bourbon chocolate bourbon bourbon coffee wood bourbon bourbon. Delicious, has glass appeal but mostly one dimensional. I'm glad I bought this but might not buy it again.
Aug 02, 2021
Rated: 5 by PaulMcartney33 from Florida

Jul 22, 2021
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Reviewed by mntlover from Tennessee

4.62/5  rDev +6.2%
look: 4 | smell: 5 | taste: 4.5 | feel: 4.25 | overall: 4.75
Pours murky dark bronw with anal tan head that falls to ring only light lace.

Aroma is nice malts, brown sugars, coffee, good bourbon notes without being too much, vanilla, oak, caramel. Big malty with lots of nuances. Hard to imagine a better nose on a brown ale just superb.

Taste is sadly only great not perfect like the aroma. But still following the aroma big malty treat, lots of brown sugars, vanilla, oak bourbon, caramel and coffee.

Mouthfeel is only big medium carbonation lighter side of medium. Doesn't really feel as big as the abv.

Overall one of the best smelling beers I have had in years I believe. Great full bodied flavor.
Jul 20, 2021
Rated: 4.25 by NickMunford from Wyoming

Jul 16, 2021
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Reviewed by mothman from Minnesota

4.25/5  rDev -2.3%
look: 4.25 | smell: 4.25 | taste: 4.25 | feel: 4.25 | overall: 4.25
Bottle. Tan head, caramel brown color.

Great coffee notes. Cocoa and chocolate. Caramel. Oak, vanilla, and bourbon. Smooth, creamy. Smooth. Everything is well balanced. This is a great brown ale.
Jun 21, 2021
Rated: 4.24 by aasher from Indiana

Jun 20, 2021
Rated: 4.5 by meltroha from Ohio

Jun 13, 2021
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Reviewed by StJamesGate from New York

4.21/5  rDev -3.2%
look: 3.75 | smell: 4 | taste: 4.5 | feel: 3.75 | overall: 4.25
Viscous garnet brown with just a film of tan bubbles; Tia Maria + rum nose; walnuts, crusty Irish loaf, brown sugar, sweet coffee, thread of vanilla, boozy hit, smoke + pecan pie finish; round, smooth, medium.

3.75 4 4.5 3.75 4.25

I’m all over the place with this one.
It’s so sweet - the nose hints that liqueur strength is gonna keep this balanced, but that doesn’t happen. All the additions are burying what could be a good base brown. And it’s thin for the strength + low carb for the sweetness.
At the same time, there’s a ton going on here. The triangle between bourbon, coffee and brown malt leaves room for all sorts of nuances like coconut + butterscotch (especially in baby sips, which, as mentioned, the ABV, carb+ body kinda demand).
Most notably, the oak + roasted combine for a unique kind of smokiness - I’d say have this with a cigar, and I don’t even smoke.
On the other hand, it’s not’s not a great brown, a great coffee beer, or a great bourbon BA beer.
On the other other hand, it’s idiosyncratic, complex + ultimately satisfying.

Not anything that it says it is, but enjoyable just the same.
May 28, 2021
Rated: 4.25 by Ristaccia from Nebraska

May 10, 2021
Rated: 4.5 by Burg from New Hampshire

May 05, 2021
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Reviewed by Whyteboar from Michigan

5/5  rDev +14.9%
look: 5 | smell: 5 | taste: 5 | feel: 5 | overall: 5
This thing drinks like a BA stout in some ways but isn't, and when comparing side by side the difference is very noticeable, hence my rating. If you need to compare against a beer 2 tiers higher, you are generally talking exceptional.
The pour was enticing, an opaque rich dark brown capped with a dense tan head that leaves delicate lacing all the way down the glass. The aroma is warm malts softly couched in coffee and cocoa. For someone who really drinks a lot of stouts, this impressed me no end. Just excellent.
Then you get to the taste, wow. For a brown, this punches way above its weight. The flavor follows the aroma, deep and rich malts swirl through and soak your taste buds and just before you start to think it's going to be sweet, the coffee kicks in and gently bitters up the swallow.
Because of the high ABV, I've generally grabbed a stout when wanting something rich, dark and tasty. I will reconsider that and put this one into the rotation. I am especially impressed by the feel - more viscous than a non-BA brown, but less than a BA Porter or Stout (Good ones anyways)
Man, so glad these guys are local. I can get this just about any time!
May 03, 2021
Rated: 4.5 by kybeerdrinker from Kentucky

May 01, 2021
Rated: 4.22 by Grupatre from Michigan

Apr 12, 2021
Rated: 4.17 by DucksFan16 from Tennessee

Apr 03, 2021
Photo of TheRougeBastard
Rated by TheRougeBastard from North Carolina

4.39/5  rDev +0.9%
look: 4.25 | smell: 4.5 | taste: 4.5 | feel: 4 | overall: 4.25
Simply outstanding! Delicious chocolate-coffee with a slight bourdon-esqe aftertaste that got even better as it warmed!
Mar 27, 2021
Rated: 4.5 by dtm426 from Michigan

Mar 26, 2021
Photo of zac16125
Reviewed by zac16125 from South Carolina

4.08/5  rDev -6.2%
look: 4.5 | smell: 4.5 | taste: 3.75 | feel: 4.25 | overall: 4
Pours dark brown, opaque, 2 fingers width of dense very light tan head with good retention. Aroma is huge, rich coffee notes. Moderate strength barrel characters with great notes of bourbony vanilla. Taste doesn’t quite follow and is a bit of a let down. Coffee is there but it’s more generic bitterness than rich smooth coffee notes. Bourbon notes are there, but again it’s a bit harsh as opposed to smooth bourbony goodness. Not a ton of base beer characters are present, perhaps some caramel and very subtle roastiness. Mouthfeel is smooth, body on the fuller end for a brown ale but is welcomed. ABV is completely unnoticeable which is impressive for a double digit brown ale. It’s quite drinkable. Overall, it’s a good beer def has its pros and cons.

Mar 08, 2021
Rated: 4 by goleeoh from Michigan

Mar 08, 2021
Rated: 4.25 by mpk2020 from Illinois

Mar 02, 2021
Underground Mountain Brown from Founders Brewing Company
Beer rating: 96 out of 100 with 733 ratings