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 #821
4.35 | pDev: 7.13%
Nov 15, 2023
Mar 10, 2012
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
Recent ratings and reviews. | Log in to view more ratings + sorting options.
Rated: 4.44 by kodt from Illinois

Nov 15, 2023
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Rated by Fordcoyote15 from Pennsylvania

4.04/5  rDev -7.1%
look: 4.25 | smell: 4 | taste: 4 | feel: 4.25 | overall: 4
Not sure how I dont have this one rated. Having a 2019 vintage in 2023. Definitely fallen off but a once very nice beer.
Oct 26, 2023
Rated: 4.06 by mdaschaf from Indiana

Jun 18, 2023
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Reviewed by BitteNochEinWeissbier from Pennsylvania

4.13/5  rDev -5.1%
look: 4.25 | smell: 4.25 | taste: 4 | feel: 4 | overall: 4.25
12 oz bottle
Bottled On Date: 08.08.2019
Consumed on: 30 Apr, 2023
Glass: Snifter
ABV: 11.9%
Serving Temp: room temp

Opaque black with a 2+ finger creamy dark khaki head. The head slowly dissipates to 1 finger high and then to a thick ring and thin cover. Lacing is excellent.

Coffee with some Bittersweet chocolate. Also brown sugar and vanilla. More than a touch of bourbon.

Sweetened coffee with a hint of cream starts the sip off. These are joined by notes of anise/black licorice fairly quickly. Some char then shows up and the coffee becomes more prominent. Bourbon notes underlie the entire sip. The sip finishes a bit boozy with coffee and bittersweet chocolate. There is also a slight sting at the end and some warmth from the alcohol.

Smooth and mouth-coating. Very noticeable warmth and a sting from the alcohol. The body is medium-light.

A quite tasty and complex brew. It is a nice companion to a rainy, slightly chilly spring evening. The beer has held up quite well over for being 3.75 years old. The coffee has (if I recall fresh samples correctly) faded during that time, but it is still very present.
May 01, 2023
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Reviewed by NorsemanOne from Utah

4.35/5  rDev 0%
look: 4.25 | smell: 4.25 | taste: 4.25 | feel: 4.75 | overall: 4.5
Bottled on 7.29.19

Poured into the ol' weizen glass at fridge temp.

Onto this however; pours a deep dark hickory with a fairly impressive head that left some consistent and sticky lacing and settled into a 1/4 finger ring. 4.25

Strong brown sugar,medium roast-esque coffee, and robust chocolate. Hints of bourbon-like vanilla and caramel. Sweet but not at all overwhelming and I'm really digging it. 4.25

At fridge temp I get medium coffee again, some lighter chocolate, and just a bit of bourbon vanilla and caramel.
Warmed up the coffee almost fades away to leave behind the bourbon and some more noticeable booze. 4.25

Body is surprisingly drinkable and a tad heavier than light, and lighter than moderate. Very drinkable for a higher abv, which again is a win in my book. Hint of booze, but not lingering. Warming for just a minute or so before fading. 4.75 damn I wanna give this a 5 really bad I enjoyed it that much.

Overall definitely the most approachable and not overwhelming bigger beer I've consumed to date. Flavors were dynamic, and brilliant in a way I don't usually see in the style. This took them all and perfectly balanced them. 4.5
Apr 19, 2023
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Reviewed by craftbeersweden from Sweden

4.54/5  rDev +4.4%
look: 4.5 | smell: 4.75 | taste: 4.5 | feel: 4.25 | overall: 4.5
Best before July 18, 2020. I'm not ok with that! Absolutely perfect beer 3 years later.

The beer pours deep brown - mahogony colored beer with a beige head.
A lot of lacing on the glass that stays forever!

Nose: Caramel, oak, Bourbon barrels, hazelnut, vanilla, almond, roasted malt and coffee.
Taste: Barrels, vanilla, oak, hazelnut, coffee, caramel malt, roasted malt notes, bourbon, cinnamon, chocolate and toffee.
mouth: Full body. Low ans smooth carbonation. Dry and sweet. Light bitter ending.

Absolutely AMAZING! Love this beer!
Mar 24, 2023
Rated: 4.2 by cabsandking from Ohio

Jan 25, 2023
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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
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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
Underground Mountain Brown from Founders Brewing Company
Beer rating: 96 out of 100 with 740 ratings