Chaos Theory | BrewDog

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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

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Reviews: 75 | Ratings: 108
Photo of BlackHaddock
3.82/5  rDev +1.6%
look: 3 | smell: 3.5 | taste: 4 | feel: 4 | overall: 4

Third BrewDog beer of the evening, poured into my lovely 'Judas' glass, almost a full year of life left according to the label.

Murky dull, deep, old gold/muddy terracotta coloured body with an off-white head on top.

Smells of hops and more hops, maybe a hint of malted barley in there too.

Good hoppy taste, not over the top, just heavy on the hops. The ABV is feelable and sits well within the taste and structure of the beer.

Could do without some of the condescending blurb on the label, but the beer is very good.

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Photo of WesWes
3.78/5  rDev +0.5%
look: 4 | smell: 3.5 | taste: 4 | feel: 4 | overall: 3.5

The beer pours a nice amber color with a thick frothy offwhite head that slowly fades to lacing. The aroma is decent. It has a complex malt aroma of pale, Carapils, and bisquit malts along with a mild hop nose that balances the aroma nicely. The taste is good. It has a smooth, malt centric flavor with a solid hop taste in the finish. It's got a fresh hop taste, but nothing over the top like most American IPA's. Instead, the malts provide excellent character and appropriate balance. The mouthfeel is fine. It is a full bodied beer with adequate carbonation. This is a good drinking beer. It's nothing exceptional, but it's full of flavor and easy drinking even at 7.1%.

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Photo of atsprings
4.08/5  rDev +8.5%
look: 4 | smell: 3.5 | taste: 4.5 | feel: 4 | overall: 4

22.4oz bottle into a Duvel tulip at Flying Saucer pours a crisp dark orange with a decent khaki head that lasts and leaves spotty lacing on the glass. Aroma is a decent balance of sweet malts and funky hops. The taste is funky bitter hops up front with a nice malt backbone, very interesting and unique, quite tasty. The beer is medium bodied with a slight alcohol presence. This is a very enjoyable, unique beer.

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Photo of Travlr
3.76/5  rDev 0%
look: 4 | smell: 3 | taste: 4 | feel: 4 | overall: 4

Appearance is deep amber orange with a large thick off white head and excellent lacing.
Smell is very subtle, just a bit of citrus and some floral notes.
Taste is rich malt, grapefruit, and a background of black pepper. Dry, with a moderately bitter finish.
Great body, very nice IPA, not over the top, complex flavor.

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Photo of Offa
4.1/5  rDev +9%
look: 4 | smell: 4 | taste: 4 | feel: 4 | overall: 4.5

This is an excellet, solid IPA, with firm, lightly complex flavour, and good balance.

Copper-amber, faintly hazy, it has a medium pale beige head that slowly shrinks to thin, frothy top and leaving a little nice, frothy lace.

Aroma is subdued but still characterful, with firm malty grain, fruity and jammy with citrusy hops leaning to the orange and marmalade. There is a hint of pine sap and herbal leafiness as well.

Taste is firmly malty, raisiny and lightly but clearly toasty and earthy with citrusy hops (bitter, burnt orange, orange zest, hint of grapefruit), hints of resin and herbal, leafy spiciness. Overall, bitterness and sweetness are balanced, with bitterness just taking over the finish slightly, with a briefly spicey bitter finish, before settling back into a lingering, balanced aftertaste with even bitterness and sweetness. Elements are integrated well and all hold up nicely. It has a light fullness with a hint of oiliness without relaly bieng oily.

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Photo of cypressbob
4.2/5  rDev +11.7%
look: 4 | smell: 4 | taste: 4.5 | feel: 4 | overall: 4

330ml bottle, served chilled (in the same glass I've been using for all my beer notes over the last week or so, I will dip into the collection and change things a little)

It pours with a rich, slightly hazy amber body. Whispy off white head soon settling to a modest half finger.

Not a huge nose, English hops beefed up with an almost pilsner-esque Sazz aroma. A touch medicinal but only very slight, some fruity notes too but nothing overpowering

On the palette. huge biscuity dry lingering hops. A whack of quinine and grapefruit acidic notes, followed by a lasting pleasing dryness on the finish. Backbone of pale malt with a touch of alcohol too. Not big on aromas but hugely hopped bitterness on the palette. Some esters lingering around the mouth punctuated by bills, ballsy bitterness

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Photo of NittanyBeerFan
3.85/5  rDev +2.4%
look: 3.5 | smell: 3.5 | taste: 4 | feel: 4 | overall: 4

Got this one in a trade with stoutfiend27...Thanks Stephen!

A: No head to speak of, but the color is a beautiful crisp copper...any darker and this would look like a DIPA. Despite the lack of head, there is a surprisingly full laced pattern.

S: Sweet smell of caramel malts come through in a big way. There are also some earthy and citrusy hops with a decent amount of hop bitterness that pushes the initial caramel malt character away.

T: Sticky and bitter citrusy hops with some lighter earthy notes take control of the palate early. There is a lot of alcohol in this for an IPA, but none of it is noticeable in any way. The malt backbone is almost DIPA-like in the depth of its caramel flavor.

M/D: Surprisingly smooth, as the carbonation is low (expected after the lack of head). The feel is sticky and resinous, as the beer stays with you after the swallow. The hop character was good and fully. Very enjoyable overall.

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Photo of Gmann
3.5/5  rDev -6.9%
look: 3.5 | smell: 3.5 | taste: 3.5 | feel: 3.5 | overall: 3.5

Pours a brown color with honey hightlights, a rather small and whispy head that dissipates into a light ring. Aroma is of toasted malt, fruity, caramel, and a light floral hop. The taste starts off with a bready malt, has a weird sour spiciness, honey, mineral water and some herbal notes. The hop flavor has some tropical fruit notes, piney with a touch of resiny bitterness. The brew has a moderate body with semi-soft carbonation; starts off sweet but finishes bitter. A malty AIPA for sure, though not overly so. Seems like a dirty AIPA since there are quite a few flavors from the malt. The hop profile is nothing special. A unique take on an AIPA.

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Photo of fullsweep
2.93/5  rDev -22.1%
look: 4.5 | smell: 4 | taste: 2.5 | feel: 3 | overall: 2

330 mL brown bottle poured into a pint glass.

A: beautiful, clear, brown/amber with hints of orange in the color. Very thin/no head but a bit of lacing.

S: fruity, hoppy, with melon, pumpkin, rutabaga/swede and some sour/ripe hints in the fruit aromas.

T: again fruity but overpowered by a strong hoppy bitterness--too bitter for my tastes.

M: sticky/syrupy with light carbonation

D: not a bad beer, but overall not one I'll drink again due to the high bitterness/hopped factor.

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Photo of vrazionale
4.1/5  rDev +9%
look: 4 | smell: 4 | taste: 4 | feel: 4 | overall: 4.5

22.4 oz bottle at refrigerator temperature poured into a snifter. Bottle reads: "Batch 012, Best Before 08/16/10."

A - Burnt siena brown body with a foamy cream-colored head that backs down to splotches along the edges.

S - Floral, fruity, and spicy. The fruit character is stone fruit all the way - peach and apricot. The sweet malt profile reminds me of layered, complex heather honey. Quaffable and unique - altogether a very accessible and enjoyable nose.

T - A touch of bitterness from the hops, but by and large the hop character manifests itself as fruity and floral. I find the flavor profile to be very balanced and well-layered - everything just sits well together. Alongside the mildly bitter finish, I am again reminded of the richness and complexity of a darker heather honey.

M - The carbonation in this brew is pretty spot-on. Just enough to lift the heaviness of the malt character off of the palate, leaving behind the more subtle and understated flavor notes.

D - I thoroughly enjoy this brew. It's a refreshing change of pace from well-hopped and well-malted beers that have no appreciation for subtlety. On a relatively unrelated note, I have no idea why this brew is called "Chaos Theory." The pseudo-didactic description of chaos theory on the bottle does little to illuminate why the folks at BrewDog have named this beer Chaos Theory. At any rate, do yourself a favor and find this brew, along with some Cabot Clothbound Cheddar, some good butter, and a freshly-baked loaf of white bread, and make a grilled cheese to eat alongside this delicious brew. I'm fairly certain that will be a meal that you will not regret.

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Photo of DerBayer
3.54/5  rDev -5.9%
look: 5 | smell: 3.5 | taste: 3.5 | feel: 3 | overall: 3.5

Appearance of this one is extremely enticing - it s dark amber with a ruby tinge.

The smell is strongly of hops and lots thereof - very bitter. The taste is HOPS HOPS HOPS and lots thereof with little balancing malt sweetness

Mouthfel is a bit too dry for my liking but carbonation is adequate

Drinkability is OK overall

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Photo of thepeter
4.17/5  rDev +10.9%
look: 4 | smell: 4.5 | taste: 4 | feel: 4.5 | overall: 4

A - Deep orange golden in color. Nice head but turns to film fairly quickly, however left some fantastic lacing.

S - Fruity, grapefruit and tropical fruits, sappy pine needles, honey and floral notes.

T - Very similar to the smell. The fruits all hit you at the beginning with a nice clean bit of pine hops. The hop flavor escalates to a pleasantly bitter and flowery grapefruit rind all the way to the aftertaste.

M&D - Very smooth and easy to drink. The carbonation is Excellent for a bottled beer. More full bodied that many IPA's but not heavy by any means. I can (and will) drink a couple of these. My favorite Brewdog IPA.

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Photo of crowncapcollect
4.25/5  rDev +13%
look: 4 | smell: 4 | taste: 4.5 | feel: 4.5 | overall: 4

330ml bottle into straight glass

Orange butterscotch colour. Nice head, but fades quickly. Strong hoppy American craft IPA taste, but not over-carbonated. Very tasty. The hoppy aroma reminds me of marijuana (again). Another great BrewDog IPA, and better than Hardcore in my opinion, this isn't sweet, and the alcohol just doesn't seem to be there, yet at 7.1% it clearly is. Nice one.

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Photo of mdagnew
3.8/5  rDev +1.1%
look: 4 | smell: 4 | taste: 3.5 | feel: 4 | overall: 4

330ml bottle bought from GapWines, Belfast..

Poured a nice bright clear coppery orange colour. Creamy head poured small but quite thick then faded to light covering with thick edging. Barely any carbonation... patchy lacing...

Aroma - Strong juicy fruits (oranges, apricots, pinepples, pears) mixed with a good pine hop note, lots of resiny sap, quite rubbery, cut wet grass, caramel and biscuit malts, herbal and light medicinal notes, faint alcohol whiff, hint of iron...

Taste - Overripe (tropical ?) fruits (pineapples, grapefruit, apricots, light melon), slightly harsh pine and citric hop bitterness, metallic notes, honey and caramel sweetness, light biscuity malts, peppery, some breadiness, quite floral...

M&D - Fairly smooth with a slight syrupy note then a little sharpness... light / medium bodied... pretty quaffable for 7.1%

Overall - A pretty decent IPA although there are one or two off flavours... worth a try..

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Photo of Bung
3.98/5  rDev +5.9%
look: 4 | smell: 3.5 | taste: 4 | feel: 4 | overall: 4.5

Fairly bright orange pour. Limited white head, disappears quickly. Aroma not overpowering with hops, some malt, must and citrus/pear. Malt and citrus fruit is present with nice balance to the piney hops. A little smokeyness to the bitter finish. Does not linger too much either. Nothing overpowering and quite drinkable, yet not outstanding in any way. The suble burnt/smoke is a nice quality. Worth trying.

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Photo of oberon
3.68/5  rDev -2.1%
look: 4 | smell: 3.5 | taste: 3.5 | feel: 4 | overall: 4

My first stab at the BrewDog line of beers.Poured into a imperial nonic a clear bronze with a fluffy two finger white head that settled into a soapy-like mass.Big English malt and hop aromas,sweet biscuit intertwined with leafy/herbal hop notes with a tinge of iron.The flavors to me are dominated by English malt up front,lightly sweet and biscuity with that light iron/metallic presence,the hops come late with a herbal,"green" smack.If there was such a thing as a IEPA this would be it,pretty good.

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Photo of wl0307
4/5  rDev +6.4%
look: 4 | smell: 4 | taste: 4 | feel: 4 | overall: 4

Coming in a slim 330ml brown bottle, BB 17/10/10, served lightly chilled in a straight pint glass.

A: pours a much darker hue than both Punk and Hardcore IPA - dark reddish amber in colour, coming with perfect clarity, mild carbonation and a thin layer of off-white foamy head.
S: like Hardcore IPA, the aroma bursts with complex tropical fruits - green guava, sweet pineapples, star-fruits, passion-fruits, plus pink grapefruits, rendered by both hops and fruit esters, while a close sniff reveals the presence of biscuity malts and nectar-ish sourness. Refreshing and remarkably juicy-fruity, without any trace of alc. actually, while the maltiness seems to be much milder on the balance
T: the interesting foretaste of tropical fruits, grapefruity hops and nectar is ever so juicy, then gradually hop bitterness sets in, leading to a long and semi-spicy chewy finish that is pretty high on alpha acid but relatively low in terms of hop flavour. It's also in the aftertaste that the sound toffee-ish maltiness makes a belated presence, helping to reach a balance with the chewy mouthfeel.
M&D: impressively bottled, the carbonation is only lively where it's needed, against a medium body and pleasantly light (not as imposing or heavy as Hardcore IPA) flavour profile. I've had Punk IPA on cask which is absolutely sublime, while I'd tend to imagine this one on cask can match Punk's performance or fare even better, due to the understated yet firm presence of the malt elements. At 7.1%abv., I simply fail to notice the alc. content - a vivid witness to the craftsmanship! Highly enjoyable.

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Photo of MisterClean
3.9/5  rDev +3.7%
look: 4 | smell: 4 | taste: 4 | feel: 3 | overall: 4

Shared with a buddy at belmont station.

A - Poured copper gold with a 2 fingered off white head. Dissipated moderately slow and left nice lacing.

S - Honey, caramel, light bittering hops, and breadiness.

T - Honey, caramel, bittering hops, bread, and light nectar.

M - Moderate-bodied with an off-kilter balance. Hops and malts did not mesh well together. Lightly dry, but smooth.

D - An interesting beer. An American beer brewed by brits. Would be wlling to try again, and alcohol well-hidden.

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Photo of PartyBear
3.89/5  rDev +3.5%
look: 3 | smell: 4 | taste: 4 | feel: 3.5 | overall: 4

A - A cloudy light brown in colour, with a small but thick head, that showed good retention throughout the pint.

S - Noticeable hops, with some very fruity notes.

T - There is a strong fruity base to this IPA, a slight orange tang, with what tastes like melon or grapefruit. A strong bitter aftertaste of hops, that is long lasting. The is no real sign of the whacking great alcohol content in the taste.

M - Quite thin in the palette, with a mildly watery body.

D - A nice pint overall. Doesn't show signs of the high ABV, so be careful when knocking this back, as it is very easy going when drinking. I'm a big fan of IPAs, and this is the first American style one I have had, and I will definitely be seeking out more beers in this style.

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Photo of DoreenAndDave
4/5  rDev +6.4%
look: 4 | smell: 4 | taste: 4 | feel: 4 | overall: 4

A very nice, powerful IPA. Sturdy, almost heavy, but not in a bad way. This is a pretty substantial beer. Big hops, nicely bitter, with hints of maybe vanilla or something. There's some nice depth here. Overall, very good, but not quite great. Definitely would have again if the opportunity arose.

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Photo of Brad007
3.8/5  rDev +1.1%
look: 3.5 | smell: 3.5 | taste: 4 | feel: 3.5 | overall: 4

Pours a medium brown color with a nice head that fades to leave lacing in my glass.

Aroma is full of sweet malt and floral hops that are nearly hidden in the nose.

Taste is full of light, floral hop bitterness and sweet malt underneath. Bitterness isn't too much nor too little.

Mouthfeel is full of lingering hop bitterness and malt like a typical IPA. Feels British in character.

Let's see, easy to drink and feels like a British IPA that is a bit stronger than usual in flavor. American hops and British malts more like it. Something like that. I'm obviously lacking in geography. Regardless, try it. It's not their best effort though.

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Photo of SFLpunk
3.55/5  rDev -5.6%
look: 3.5 | smell: 3.5 | taste: 3.5 | feel: 4 | overall: 3.5

24.4oz brown glass pry-top bottle. BB 8/16/10.

Copper/amber with a thin white head. Aromas of biscuit, fruity yeast and citrus hops. Palate is clean with lots of British style fruity flavors and a crisp, bitter finish. Tastes like a great ESB or an extreme English IPA. Pretty good, not my favorite from the brewery.

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Photo of velkyal
4.2/5  rDev +11.7%
look: 4 | smell: 4 | taste: 4.5 | feel: 4 | overall: 4

Pours a dark amber bordering on red, although again a rather minimal head.

As would be expected from an IPA, the nose was full of citrus, in fact it was very pungent, with a mix of Seville orange marmalade and bittersweet pink grapefruit. The contrast between bitter and sweet was to be a constant theme in the beer, the first taste being very bitter, and something of a shock if the truth be told, but subsequently it mellows out to reveal its jellied undertones.

As you would expect from this style it is very hoppy and the aftertaste reminded me of drinking an excellent single malt with a nice warming afterglow. The final few mouthfuls were syrupy sweet in a way that reinforced the jelly, an excellent beer overall.

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Photo of Suds
4.07/5  rDev +8.2%
look: 3.5 | smell: 4 | taste: 4.5 | feel: 4 | overall: 3.5

I've had a few beers from this brewery and have been quite impressed. This one was not a let down either. The beer is a very clear amber color. The head is white and soapy, but it doesn't last long at all. The aroma has a very piney, citric (grapefruit and orange peel) aroma...lots of hops in this one. It's not one-sided, though, it also has a decided roasted and bready malt character. Good balance in the aroma (as well as the taste). The taste is predominantly bitter, with a great blend of hop and malt flavor. There's a little caramel flavor. Moderately sweet. Very firm mouthfeel and a medium body. The long and lingering finish is quite bitter. Good beer.

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Photo of IBUnit63
4.12/5  rDev +9.6%
look: 4 | smell: 4.5 | taste: 4 | feel: 4 | overall: 4

Picked this up today @ Marty's in Newtonville. Batch 012 with BBD 8/16/2010. 500 ml into Portsmouth snifter. I would call this an American IPA rather than an English IPA because 1) the BBD is in American rather than European format (mm/dd/yy; not the real reason) and 2) the hop profile and forwardness with a bit of malt rather than a balanced or malt-forward profile fits the American IPA mold much better.

Man, I wish the carbonation on this would have a little more staying power. It's listed as a "copper IPA" and it definitely is. The eggshell, full-finger head looks solid...for about 5 seconds...and then it goes quickly, leaving those thin bubbly wisps. Not a lot of lacing on this one, but I'm struck by the clarity of it all.

The website says "insane hops." Well, they should move up the BBD then 'cause no way in hell these hops make it to 2010. But I really don't give a rat's ass, 'cause I'm checking this deal out now, and insane indeed. The pure grapefruit pulp reminds me of the Sculpin I had the other day. A slight hint of caramel and boozy sweetness balances this out very nicely on the nose. A pleasant surprise.

I do get the graprefruit on the taste but it is much more rind than pulp. The creamy caramel malt texture is still there and this is definitely a hop bomb. It works well and shows a fair amount of synergy; only beef is that the rind profile of the hops takes away from the clarity on the nose. Maybe they take a portion of their FWH or maybe their 60 minute and jack it down to 20 and 5 to show up a little more on the nose and less on the bittering. Still, this is quite enjoyable.

There is still the rind smashing the palate into oblivion. This shows a little disjoint with the caramel malt (crystal) and a little bit of slate and earthiness. Good and enjoyable but maybe not as tightly constructed as the top range of well-oiled (higher ABV) IPAs.

It's an enjoyable IPA with good synergy. Just enough malt to sit on the other side of the seeaw with these crazy-$#!+ "C" hops. Slight dryness keeps it clean. Finish has a bit of earth but not a huge amount. This is an enjoyable capper to have every couple of weeks - it smells like a rotating release but may be a one-shot deal...sort of like the "longshot" BBC contest. This is a prototype rather than a user recipe so let's hope it makes its way around each year or more frequently. Nicely done.

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Chaos Theory from BrewDog
3.76 out of 5 based on 108 ratings.
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