-
Stop lurking! Log in to search, post in our forums, review beers, see fewer ads, and more. — Todd, Founder of BeerAdvocate
Underground Mountain Brown
Founders Brewing Company


- From:
- Founders Brewing Company
- Michigan, United States
- Style:
- American Brown Ale
Ranked #1 - ABV:
- 11.9%
- Score:
- 96
Ranked #821 - Avg:
- 4.35 | pDev: 7.13%
- Reviews:
- 241
- Ratings:
- Status:
- Active
- Rated:
- Nov 15, 2023
- Added:
- Mar 10, 2012
- Wants:
- 87
- Gots:
- 65
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
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 by Fordcoyote15 from Pennsylvania
4.04/5 rDev -7.1%
look: 4.25 | smell: 4 | taste: 4 | feel: 4.25 | overall: 4
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, 2023Reviewed by BitteNochEinWeissbier from Pennsylvania
4.13/5 rDev -5.1%
look: 4.25 | smell: 4.25 | taste: 4 | feel: 4 | overall: 4.25
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
Look:
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.
Smell:
Coffee with some Bittersweet chocolate. Also brown sugar and vanilla. More than a touch of bourbon.
Taste:
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.
Feel:
Smooth and mouth-coating. Very noticeable warmth and a sting from the alcohol. The body is medium-light.
Overall:
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, 2023Bottled On Date: 08.08.2019
Consumed on: 30 Apr, 2023
Glass: Snifter
ABV: 11.9%
Serving Temp: room temp
Look:
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.
Smell:
Coffee with some Bittersweet chocolate. Also brown sugar and vanilla. More than a touch of bourbon.
Taste:
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.
Feel:
Smooth and mouth-coating. Very noticeable warmth and a sting from the alcohol. The body is medium-light.
Overall:
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.
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
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, 2023Poured 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
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
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, 2023The 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!
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
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, 2022Rated by Sandis from Minnesota
3.28/5 rDev -24.6%
look: 4 | smell: 3.5 | taste: 3 | feel: 3.5 | overall: 3.25
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, 2022Reviewed 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
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, 2022Reviewed by Beersnake1 from California
3.99/5 rDev -8.3%
look: 3.75 | smell: 4 | taste: 4 | feel: 4 | overall: 4
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
Underground Mountain Brown from Founders Brewing Company
Beer rating:
96 out of
100 with
740 ratings
We love reviews (150 characters or more)! Check out: How to Review a Beer. You don't need to get fancy. Drop some thoughts on the beer's attributes (look, smell, taste, feel) plus your overall impression. Something that backs up your rating and helps others. Thanks!