Samuel Adams Kosmic Sour
Samuel Adams (Boston Beer Company)


- From:
- Samuel Adams (Boston Beer Company)
- Massachusetts, United States
- Style:
- Wild Ale
Ranked #822 - ABV:
- 4.6%
- Score:
- 75
Ranked #38,527 - Avg:
- 3.21 | pDev: 22.12%
- Ratings:
- | reviews: 34
- Status:
- Active
- Rated:
- Jun 11, 2025
- Added:
- Aug 08, 2019
- Wants:
- 0
- Gots:
- 8
No description / notes.
Recent ratings and reviews. | Log in to view more ratings + sorting options.
Ratings by Roguer:
Reviewed by Roguer from Connecticut
3.28/5 rDev +2.2%
look: 4 | smell: 3.5 | taste: 3.25 | feel: 3 | overall: 3
3.28/5 rDev +2.2%
look: 4 | smell: 3.5 | taste: 3.25 | feel: 3 | overall: 3
Crystal clear, caramel-tinged amber body; even once the yeast particulate are poured in, they provide only a slight haze, not impeding the transparency of the body. Very lively. Excellent head production and lacing; retention is very good.
Lightly tart nose, along with wheat and a sweet, drily spicy, Belgian yeast-like aroma. Mild tannins, grapes, and raspberries.
Impressions of wheat and Belgian yeast continue on the palate. Mild rustic funkiness, caramel, clove, and a touch of tannin and berry. For a beer literally named, "Sour," this beer isn't particularly sour. Fairly thick on the palate for such a low ABV brew, as well.
This isn't a bad beer, and I'd likely prefer it on tap over the standard seasonal offerings. It is not remotely a sour beer, however, and it is at best a solid but unimpressive ale overall.
Aug 17, 2019Lightly tart nose, along with wheat and a sweet, drily spicy, Belgian yeast-like aroma. Mild tannins, grapes, and raspberries.
Impressions of wheat and Belgian yeast continue on the palate. Mild rustic funkiness, caramel, clove, and a touch of tannin and berry. For a beer literally named, "Sour," this beer isn't particularly sour. Fairly thick on the palate for such a low ABV brew, as well.
This isn't a bad beer, and I'd likely prefer it on tap over the standard seasonal offerings. It is not remotely a sour beer, however, and it is at best a solid but unimpressive ale overall.
More User Ratings:
Reviewed by Sabtos from Ohio
1.35/5 rDev -57.9%
look: 3.5 | smell: 1 | taste: 1 | feel: 3 | overall: 1
1.35/5 rDev -57.9%
look: 3.5 | smell: 1 | taste: 1 | feel: 3 | overall: 1
A short but level off-white blanket builds over a sort of dull, pale tan-amber body
Whatever tartness this beer initially came out the gate with seems to have entirely subsided, leaving amber malts and an unpleasant cardboardy graham oxidation.
Wow this one was bad.
Nov 20, 2023Whatever tartness this beer initially came out the gate with seems to have entirely subsided, leaving amber malts and an unpleasant cardboardy graham oxidation.
Wow this one was bad.
Reviewed by woodychandler from Pennsylvania
3.5/5 rDev +9%
look: 4 | smell: 4 | taste: 3 | feel: 4 | overall: 3.5
3.5/5 rDev +9%
look: 4 | smell: 4 | taste: 3 | feel: 4 | overall: 3.5
I am continuing to purge the Bottle Backlog here at Chez Woody while The CANQuest (tm) waits patiently in abeyance. If there was a silver lining to the COVID-19 cloud, it is my quarantine with all of this beer to be drank! This one came from Weis Market on Lititz Pike.
From the Bottle: "Brewer [-] Patriot"; "Limited Release"; "Tart & Wild Ale"; "11 IBUs"; "Who's got the funk? We got the funk. This beer is blended with a funky Belgian ale called Kosmic Mother Funk (KMF) (R) that is spontaneously fermented and aged for two years in Hungarian oak foeders. Wild yeasts in the barrels contribute a unique fruity and tart character. [undersigned] Jim Koch Founder & Brewer".
I Pop!ped the cap on this curiosity & started a slow, gentle C-Line pour into the awaiting glass. I was rather surprised as it foamed up to form two-plus fingers of dense, foamy, rocky, eggshell-white head with extraordinary retention for the style. Color was a solid Amber (SRM = > 7, < 9) with NE-quality clarity. Nose had a lightly tart funkiness, causing my lips to slightly purse. Mouthfeel was medium, big for the style. The taste was less tart than the nose had led me to gird myself for & the funk was relatively muted. I got a raspberry-cherry fruitiness from it, but it was rather light. I am used to being challenged by beers in this style & this just was not bringing it. I have adult-onset GIRD so I am compelled to take a pill before drinking something like this. Here, I could have probably skipped the meds. Finish was semi-dry & I felt like I had been cheated, except for the fact that I got it as a single, so it was a one & done anyway. YMMV.
Apr 17, 2020From the Bottle: "Brewer [-] Patriot"; "Limited Release"; "Tart & Wild Ale"; "11 IBUs"; "Who's got the funk? We got the funk. This beer is blended with a funky Belgian ale called Kosmic Mother Funk (KMF) (R) that is spontaneously fermented and aged for two years in Hungarian oak foeders. Wild yeasts in the barrels contribute a unique fruity and tart character. [undersigned] Jim Koch Founder & Brewer".
I Pop!ped the cap on this curiosity & started a slow, gentle C-Line pour into the awaiting glass. I was rather surprised as it foamed up to form two-plus fingers of dense, foamy, rocky, eggshell-white head with extraordinary retention for the style. Color was a solid Amber (SRM = > 7, < 9) with NE-quality clarity. Nose had a lightly tart funkiness, causing my lips to slightly purse. Mouthfeel was medium, big for the style. The taste was less tart than the nose had led me to gird myself for & the funk was relatively muted. I got a raspberry-cherry fruitiness from it, but it was rather light. I am used to being challenged by beers in this style & this just was not bringing it. I have adult-onset GIRD so I am compelled to take a pill before drinking something like this. Here, I could have probably skipped the meds. Finish was semi-dry & I felt like I had been cheated, except for the fact that I got it as a single, so it was a one & done anyway. YMMV.
Reviewed by Beejay from Virginia
3.35/5 rDev +4.4%
look: 4 | smell: 3.25 | taste: 3.25 | feel: 3.25 | overall: 3.5
3.35/5 rDev +4.4%
look: 4 | smell: 3.25 | taste: 3.25 | feel: 3.25 | overall: 3.5
A: golden brown with a light off white head.
S: lightly tart with some berry aroma, and a bit of lacto.
T: lightly tart with berry, fairly sweet, not bad.
M: medium light, with lower carbonation, and a slight dryness to the finish.
O: overall not bad, but not great either. I could see this being used for mixing.
Mar 04, 2020S: lightly tart with some berry aroma, and a bit of lacto.
T: lightly tart with berry, fairly sweet, not bad.
M: medium light, with lower carbonation, and a slight dryness to the finish.
O: overall not bad, but not great either. I could see this being used for mixing.
Reviewed by EMV from Pennsylvania
3.09/5 rDev -3.7%
look: 4 | smell: 3.75 | taste: 2.75 | feel: 3 | overall: 2.75
3.09/5 rDev -3.7%
look: 4 | smell: 3.75 | taste: 2.75 | feel: 3 | overall: 2.75
Poured from a 12 oz bottle into a Dogfish Head tulip
L: Clear light golden amber pour with 2 fingers of foamy white head. Nice lacing.
S: Some green fruit and funk... a bit of oak/barrel.
T.F: Not much here. Minimal funk.. soap and oak. No tartness whatsoever. Maaaybe some hints of fruit somewhere in there but again... just not a lot going on flavor-wise. Light bodied... kind of unpleasant aftertaste.
O: Hugely disappointing beer. Looks good. Smells good. No taste whatsoever... and certainly nothing sour here. So glad this was in a mix-a-six.
Dec 24, 2019L: Clear light golden amber pour with 2 fingers of foamy white head. Nice lacing.
S: Some green fruit and funk... a bit of oak/barrel.
T.F: Not much here. Minimal funk.. soap and oak. No tartness whatsoever. Maaaybe some hints of fruit somewhere in there but again... just not a lot going on flavor-wise. Light bodied... kind of unpleasant aftertaste.
O: Hugely disappointing beer. Looks good. Smells good. No taste whatsoever... and certainly nothing sour here. So glad this was in a mix-a-six.
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