Chaos Theory | BrewDog

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Chaos TheoryChaos Theory
Very Good
108 Ratings
Chaos TheoryChaos Theory

Brewed by:
Scotland, United Kingdom

Style: English India Pale Ale (IPA)

Alcohol by volume (ABV): 7.10%

Availability: Rotating

Notes / Commercial Description:
No notes at this time.

Added by Suds on 05-14-2009

Bros Score:
User Ratings & Reviews
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Ratings: 108 |  Reviews: 75
Photo of BeerResearcher
3.83/5  rDev +2.1%
look: 4 | smell: 3.5 | taste: 4 | feel: 3.5 | overall: 4

1 Pint 6.4 oz dark brown bottle. Freshness date stamped on back label.
Served in standard pint glass.
It pours a shiny coppery amber color with a big fluffy, though fast-fading off-white head. A fair amount of sticky lacing trails behind.
The first smell out of the gate is citrusy fruit cup, followed by barn grain and wheat crackers. A whiff of ginny alcohol is noticed in the background. A light floral smell seems to come and go.
A pink grapefruit bitter tartness leaps out. A minty herbal taste blends into the caramel malt backbone. A light taste of gin follows and lingers throughout as does a touch of a metallic tang.
The mouthfeel transforms from a slightly raspy cutting feel to a slightly fluid, nearly oily slickness.
All in all a nice Scottish take on an old English classic.
Pairs very well with sharp aged cheddar and salty crackers or pizza with the works.

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Photo of WVbeergeek
3.53/5  rDev -5.9%
look: 4 | smell: 3.5 | taste: 3.5 | feel: 3.5 | overall: 3.5

Why is this still being sold at Bocktown for top dollar it's an English IPA, the label doesn't say what it is. I have a buttery/not hoppy ale from Scotland. WTF? Best before 8/16/10 Pours deep semi clouded apricot amber with a cream head forms fine bubbled with even lacing. Aroma has stale hops with hints of cardboard and caramel malt hidden amongst the old hops. Flavor brings on hints of butterscotch and spicy herbal hops, not bad actually. A strong pine bitterness almost resinous like amongst the faded hops there's still some strong hop bitterness and flavor. Not green but in this english style IPA the hops have acted as a natural preservative, this is probably closer to what the original was like. Mouthfeel is dry with bitterness medium bodied ale, any American IPA I've found this old is undrinkable and I don't feel this way about this offering. Overall impression I need to try this fresh but this beer is decent a solid EIPA. I will try more Brewdog because everything else I've had has been solid.

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Photo of mclaughlindw4
3.85/5  rDev +2.7%
look: 4 | smell: 4 | taste: 4 | feel: 2.5 | overall: 4

This bottle has a best before date of 18/06/10. This is actually my first brew dog beer. Has a dark coppery appearance and a great malty smell. no long lasting head as described in other reviews. Its malty upfront and bitter in the end but the two don't get confused. Carbonation is lacking and it is a little syrupy which is not to my liking but otherwise a great beer.

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Photo of StoneBrewFanatic
3.83/5  rDev +2.1%
look: 4 | smell: 3.5 | taste: 4 | feel: 3.5 | overall: 4

A - Pours a cloudy light copper into my tulip glass with just about a finger of head that lingers a little and leaves some splotchy lacing.

S - Sweet caramel malts and a mild hop presence. Grapefruit, apple and pear.

T - Sweet caramel and bitter hops. Pine/resin like hop quality with apple and pear like notes to it.

M - Perhaps because it's a few months past expiration but it is under-carbonated and a little thin.

D - This was a good beer, nothing I was too excited about, would try it again if I got it fresh.

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Photo of CrazyDavros
3.75/5  rDev 0%
look: 4 | smell: 4 | taste: 3.5 | feel: 3.5 | overall: 4

Pours clear amber with a large, lasting head.
Nose shows loads of piney resin, sweet caramel and cookie dough-like malt.
Similar flavours, pine, sweet clean malt. Finishes with a sharp pronounced bitterness.
Nice syrupy body, carbonation could be a lot higher though.

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Photo of shambeano
3.83/5  rDev +2.1%
look: 4 | smell: 3.5 | taste: 4 | feel: 3.5 | overall: 4

A- pours amber, with about an inch of fluffy off-white head. subsides pretty slowly, leaving some lacing.

S- little yeasty, with some peppery hops. not too much going on.

T- quite malty to begin with, followed by some peppery, slightly piney hop, little bit herbal, but it is quite nice. finish is pretty bitter, but not over the top.

M- prickly carbonation, can feel the bitterness at the back of the mouth. mid length on the finish.

D- pretty easy to drink this one. i could have a couple very easily.

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Photo of ADZA
3.83/5  rDev +2.1%
look: 4 | smell: 3.5 | taste: 4 | feel: 3.5 | overall: 4

This brew pours a murky light apricot hue with decent carbonation that leaves behind a creamy two finger head that stays and leaves some nice lacing,the aroma is a combination of toffee/caramel malts,fresh green apples and piney hops and lots of them,it has a medium bodied mouthfeel which is a tinge stickyish and leaves tastes of passionfruit,peaches,lychee,toffee and finishes with a bittersweet tinge thats more bitter than sweet,overall a nice drop without being a standout and i know this brewery is capable of way more.

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Photo of Teleweizen2
3.57/5  rDev -4.8%
look: 3.5 | smell: 4 | taste: 3.5 | feel: 3 | overall: 3.5

A - pours a dark coppery gold with some orange highlights and a dense 3 finger off white head.

S - grassy hops and some bready and caramel malt undertones.

T - intense grassy bitterness. Very floral. Nicely balanced by the malts.

M - medium bodied. High carb.

D - abv and the hop profile do seem a bit much for an English IPA but it fits American standards quite well.

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Photo of ianmhall
3.93/5  rDev +4.8%
look: 4 | smell: 3.5 | taste: 4 | feel: 4.5 | overall: 4

(***drinking this beer past the best before date of 8/8/2010)

a- pours a hazy murk sort of neon brown... head is thick and floppy a loose bit of carbonation which dissipates in a rather sloppy manner leaving just thin lace off-white to tan in color

s- is malty and bready with great amounts of fruit... tangerine and melon with some meaty banana type play--- pretty unique bubble gum chewed up with pine nuts?

t- slight hoppiness that really never grabs a hold of my taste buds just sort of dances around on the edges of my taste buds--- this is a post modern uber-english ale... a very lithe bit of carbonation and a buttery spice on the finish with an apple, citrus and pine middle...

m- pearly and kaleidoscopic slippery mouthfeel that gives me sensations of lead and graphite

d- rather drinkable and a beer i would love to have fresh... an ale built for 2025

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Photo of Metalmonk
4.22/5  rDev +12.5%
look: 4 | smell: 4.5 | taste: 4 | feel: 4 | overall: 4.5

Pours a remarkably frothy head, off-white and long-lasting. The liquid is a lightly hazed bronze color, and only small, thin wisps of lace are left on the glass.

Aroma is very much to style, but of course with the usual BrewDog twist. (Wouldn't be a BrewDog brew if it didn't have some kind of twist in the structure.) The nose receives a nice dose of musty, buttery, semi-sweet toffee-like malt, with a little bit of butterscotch coming in as well. Hop presence is merely subtle, with the malt being more upfront than a typical IPA, and there's your twist. A malt-forward IPA. Great!

Flavor brings everything in that could be expected from the aroma, although it's a bit more bitter, even leaning on the metallic/steely side of bitter. Not in a bad way. Lotsa grapefruit buried under the malt. Everything is nicely balanced and earthy. Malt sweetness remains toffee-like and slightly burnt-tasting. Hops are grassy, citrusy and bordering on astringent. Butterscotch remains from the aroma, and the hops exert a nice green snap throughout the finish. With all that, it's the malt that remains the most impressive feature, as with the aroma. The malt serves as a savory, fairly complex anchor in what is a pretty big-tasting beer, never veering into the waters of messiness or, ironically enough, chaos.

Feel is a light, airy sort of thing, not thin or watery but certainly having the kind of incredibly easy glide that makes it too easy to drink too quickly.

I always enjoy the esoteric, even existential ramblings on the BrewDog labels, and I'm a definite fan of these guys in general, all their boundary-stretching and button-pushing is a good thing as far as I'm concerned. Chaos Theory is true to style, yet one that takes the road less traveled anyway. Nice work, fellas, this is intriguing.

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Photo of July2Nov
4.07/5  rDev +8.5%
look: 3.5 | smell: 4 | taste: 4 | feel: 4 | overall: 4.5

Appearance: Hazy sunburst orange. Slight lacing.

Smell: Cirtus, clove and biscuit and toast scents come through.

Taste And Mouthfeel: Firstly, Slight heat from the alcohol...then a sweet caramel taste comes out, followed by a mild hop note and settles with an almost peppermint flavor. The aftertaste on this is so's so sweet once it hits your lips!

Drinkability: This is a deceiving little can barely taste the alcohol. It's quite refreshing and should be tasted. Now this is the sort of chaos I don't mind in my life!

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Photo of flexabull
4/5  rDev +6.7%
look: 4 | smell: 4 | taste: 4 | feel: 4 | overall: 4

With all this news about BrewDog, I decided to try some of their beers out. (Marketing worked?! Actually, I have thought about buying their stuff before, and now that it showed up at my local store, I figured I'd give them try)

This bottle is larger than the one in the photo, 1 pint, 6.4 fl ounces. No batch #, best before 8/16/10.

Pours a nice bright and clear orange color with a solid white head.

Aromas are of brewed tea, cereal grains, and hints of citrus.

Flavors are good, and not overpowering. Some brewed tea up front, as well as soft creamy and toasted malt flavors. Finish is a bit dry, with an earthy hop bite.

Mouthfeel is nice and full, pretty smooth, but not overly heavy.

Drinkability is good. Pretty solid English IPA. I like how the malts and the hop flavors are nicely balanced. Pretty good stuff, I'd happily drink another one of these.

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Photo of JamesS
4.35/5  rDev +16%
look: 4.5 | smell: 4.5 | taste: 4 | feel: 4 | overall: 5

Poured a very nice murky copper color with wonderful head and lacing. Excellent scent; very deep malty sweetness -- very thick; excellent bitter tones in the nose, slight jerky tinge, great English hop scent. Very good taste; it has a great thick maltiness throughout with hints of caramel; wonderful hop attributes throughout, especially with the great English hops at the end that stay on the tongue. Fairly thick, but goes down well for a 7+ ABV brew.

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Photo of NCSUdo
4.45/5  rDev +18.7%
look: 4 | smell: 4 | taste: 4.5 | feel: 4.5 | overall: 5

22 oz bottle, Batch 012

A: Dark copper body under a small white head. Some lace and small amount of retention.

S: Mixture of sweetish citrus fruit and some grassy hops, good caramel malt backbone. Pretty well balanced, although maybe a little more hop character could be added.

T: Grassy/slighly citrus hops, pretty big bitterness, a bit fruity, caramel malt isn't quite as big as in the aroma. Despite big bitterness, balance still maintained. Pretty tasty.

M/D: Smooth, medium body, carbonation is relatively low, alcohol is not apparent. Drinkability is superb for me. Maybe not a surprising good beer in itself, but definitely surprised how good I find this beer (Brewdog seems hit or miss).

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Photo of JRed
3.43/5  rDev -8.5%
look: 4 | smell: 3.5 | taste: 3.5 | feel: 3.5 | overall: 3

Dark, murky orange-amber in body with white bubbly head. English aroma of butter, light fruit, caramel. Buttery flavor with caramel, butterscotch, light fruit, alcohol booze towards the finish. Medium bodied with an oily slickness on the palate. A strange, malty drink that does defy many styles. The caramelized sugar is a bit much towards the end.

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Photo of trygger87
3.78/5  rDev +0.8%
look: 4 | smell: 3.5 | taste: 4 | feel: 4 | overall: 3.5

Picked up a 22 ounce bottle of this stuff because iv Never had Any of brew dogs stuff and this one for some reason caught my attention.
Looks are a dark copper thing with NO head what so ever.Also no carbonation from the looks of things.
The smell is extremely biscuity, like all i smell is biscuit and iv never smelled that in any kind of IPA.Big time malts are also present and taking stage.Hops are mixed in but play a very minor role in the scent.
Taste is sweet at first followed by hints of pear and apple. Then bitterness ensues and lingers around for a while.
Refreshing mouth feel on this one! Unlike most IPA iv had its not over whelming at all and not sticky. In my opinion the mouth feel is one of the best aspects of this beer.
The drinkability is middle of the road. While its got a great mouth feel, its bitter like any IPA would be.Thought this is not a bad beer at all, in fact if you like IPA's but want some thing new try this beer and you will not be disappointed.

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Photo of bceagles39
3.85/5  rDev +2.7%
look: 4 | smell: 4 | taste: 4 | feel: 3.5 | overall: 3.5

Had at home (poured from a bottle) in May 2010.

Pours a cloudy amber color. Low carbonation, average lacing.

Smells fruity and hoppy, familiar smells (like it's an American IPA).

Great refreshing first sip, great balance.

Hoppy, strong bitter finish and aftertaste. Kind of soured my view of the brew. Glad to have tried it.

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Photo of champ103
3.42/5  rDev -8.8%
look: 3.5 | smell: 4 | taste: 3 | feel: 3.5 | overall: 3.5

A: Pours a copper reddish color. A two finger, bubbly white head forms. The foam recedes in a second, and leaves light lace.
S: Floral and grassy hops up front. Light citrus. Sweet caramel. Doughy and biscuit malt. Really well balanced, as an English IPA should be.
T: Light citrus with a strange bitterness. Rough and grainy malt. Dry moldy wood. Light smoke. Not bad, but odd.
M/D: A medium body with crisp carbonation. Not hard to drink. Though the ABV catches up with you.

A pretty good attempt at an English IPA. Well balanced. There is nothing wrong with this, it just does not do it for me. Still, something that is worth a try.

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Photo of lordofthewiens
4/5  rDev +6.7%
look: 4 | smell: 4 | taste: 4 | feel: 4 | overall: 4

In a pint glass this beer was an orange/amber color. It had a medium off white head, and a fair amount of lacing. Sweet malt aroma, very floral, and a bit of citrus. I caught more grapefruit in the taste, some pine, and a nice malt backbone. Slightly oily mouthfeel, balanced. Nice beer.

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Photo of BabyBastard
3.73/5  rDev -0.5%
look: 4 | smell: 3.5 | taste: 4 | feel: 3.5 | overall: 3.5

Twenty two ounce bottle poured into my tulip. Says batch 012 with a best before date of 8/16/10. Good looking shade of dark and hazy amber. Minimal head present, though there is nice lacing.

Smell is a musty type floral scent, bits of pine and a bit like grapefruit also. A nice departure from the insanely hopped American IPA style.

Taste is on par with the smell, though a bit better since it coats the palate with a nice, slick, oily feeling. A good malt backbone follows up the wonderful hop flavour. Overall, seems to be very balanced in the taste department.

As stated in the taste sector, this does coat the whole mouth with that hop oil, giving rise to a slick and very easy brew to swill, though I do not suggest swilling. Drinkability is slightly above average for me, due to a slightly elevated alcohol content. A decent brew we have here, looking forward to trying more from BrewDog.

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Photo of ClassicBrad
4.2/5  rDev +12%
look: 4 | smell: 4 | taste: 4.5 | feel: 4 | overall: 4

Been trying all the Brew Dog I can get my hands on and these boys make some interesting beers. This one is a 22.4 ounce champagne bottle with some sediment at the bottom.

Appearance is a musty orange/amber with a soapy little head and some linear lacing that leaves a mark in memory of each sip.

The nose and taste is of sweet yet earthy hop nectar and biscuit malt. Very awesome example of English-style IPA. I've never really had one that excited me, but this one is very interesting! Can't really say its an authentic English version but I can say that I like it.

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Photo of Moonraker7
3.4/5  rDev -9.3%
look: 3.5 | smell: 3.5 | taste: 3.5 | feel: 3.5 | overall: 3

A: Looks great, nice amber color, nearly no head.

S: Smells fruity, very hoppy, lots of grapefruit, flowery also.

T: Taste follows the smell. Very flowery, lots of hops and grapefruit. Very bitter. Similar to an IPA.

M: Average amount of carbonation.

D: I wouldn't drink more than one at a time, it's not bad, but it really just reminds me of a mediocre IPA. This beer leaves a strong bitter aftertaste. Given the cost, this isn't something I would buy again.

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Photo of Diomede
3.05/5  rDev -18.7%
look: 3.5 | smell: 3.5 | taste: 3 | feel: 3 | overall: 2.5

Shared with a good bud, thanks for the bottle.

Off to the review...

Appearance was nice...a solid amber color, nice one-ish finger head on a mildly aggressive pour.

Aroma of malty hoppiness. A bit of a honey sweetness in the mix as well.

Flavor is definitely more bitter/hoppy than anticipated. I mostly get a strong bitter flavor over anything else. Not really picking up many other flavors.

Mouth is a bit chewy, especially as it warms. Develops a syrupy quality as you go along. Not a bad thing, just a bit different for an IPA.

Overall, a solid, drinkable IPA with some pretty bitter qualities. Alcohol probably prevents it from being sessionable (or maybe just the bitter), but still a solid offering from BrewDog.

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Photo of Arbitrator
2.9/5  rDev -22.7%
look: 3 | smell: 3 | taste: 3.5 | feel: 2 | overall: 2

Chilled 500mL bottle into a glass. Best before 08/10. Purchased at Whole Foods Los Altos against my better judgment. I can't stand BrewDog. But I was basically pushed into it on the buyer's strong recommendation.

A: Pours a clear amber body in my Stone tulip. Half a finger of light beige head that retains decently well, leaving some scattered bubbles and a medium collar on the edge when all is said and done.

S: Biscuit malt, earthy hops. Some grass and a light spice note.

T: Biscuity up front. A touch of caramel. The hops take over as a lightly earthy flavor, with some grass decorating the flavor. Lemony citrus and light spice in the finish; I can't exactly place it, but I admit it's pleasant. Strong lingering bitterness.

M: Strong, sticky bitterness and hop oils after the swallow is over. Light-medium bodied, with slightly low carbonation that is somewhat velvety.

D: More bitterness than hop flavor. I like the Great Lakes interpretation of this style a lot, so I'm comfortable calling this one a pretty mediocre attempt. At least I didn't pay much for it.

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Photo of almychristopher
3.8/5  rDev +1.3%
look: 4 | smell: 4 | taste: 3.5 | feel: 4 | overall: 4

this beer pours a an amber color with a nice off white head that recedes to lacing. the aroma speaks of floral hops with a nice malt backing. the taste brings a bit more hop than i'd expect from an english ipa, but very nice malt balance and dry finish none the less. the medium body and good co2 make this a nice drinkable ipa.

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Chaos Theory from BrewDog
Beer rating: 3.75 out of 5 with 108 ratings