Stochasticity Project: Grapefruit Slam IPA | Stone Brewing

Your Rating: None
Want it   Got it 
Very Good

Brewed by:
Stone Brewing
California, United States

Style: American Imperial IPA

Alcohol by volume (ABV): 8.20%

Availability: Rotating

Notes / Commercial Description:
First Release: February 2014
India pale ales harness the inherent flavor characteristics of hops to bring forward familiar flavors of pine, resin, spice, and citrus. In some cases, those botanicals are so potent, they exactly mirror specific edibles. Such is the case with Centennial hops, which hail from the Great Northwest and come across on the palate like a mouthful of citrus fruit. That sensation is amplified with this, the first beer introduced via the Stochasticity Project–a double IPA brewed with Centennial, Chinook and Magnum hops as well as an immense dosing of fresh grapefruit peel. The result is over-the-top bittersweet grapefruit intensity that is at once refreshing and bracing in its citrusy bitterness.

User Reviews & Ratings
Reviews: 319 | Ratings: 2,045
Photo of stevoj
3.86/5  rDev -2.8%
look: 3.5 | smell: 3.75 | taste: 4 | feel: 4 | overall: 3.75

Grapefruit melds nicely with citrusy hops, malt still shines through. Pale golden with soft white head. Tart citrus in aroma and taste. Smooth despite the high abv.

 164 characters

Photo of sweemzander
3.71/5  rDev -6.5%
look: 3.75 | smell: 4 | taste: 3.75 | feel: 3.25 | overall: 3.5

22oz bottle poured into a tulip.

(A)- Pours a clear orange color with some white froth and lacing.

(S)- A big zesty grapefruit and lemon citrus zest aroma

(T)- Huge blasts of acidic grapefruit. Huge citrus meets huge bitterness.

(M)- A good carbonation level. Absolutely massive citrus and acidic grapefruit oils from the rind. Massive bitterness too.

(O)- I like all the grapefruit this has but it envelops and overpowers all of the base flavors and aromas

 462 characters

Photo of pat61
4.5/5  rDev +13.4%
look: 4.5 | smell: 4.5 | taste: 4.5 | feel: 4.5 | overall: 4.5

L: Pours copper tinted amber under a 2” cream colored foam cap that persists and provides sheets of lace. S: Big grapefruit nose, both added and hop driven. T: Rich malt attack provides a slightly sweet backdrop with added grapefruit, grapefruit rind and hop derived grapefruit flavors playing off one another. F: Medium to medium full body, medium carbonation. O: the interactions of the various grapefruit elements make this a very interesting beer.

 453 characters

Photo of Hop_God
3.44/5  rDev -13.4%
look: 3.75 | smell: 4 | taste: 3.25 | feel: 3 | overall: 3.25

A: golden orange. fairly clear

S: lots of bitter grapefruit, some pine, grass. lemon peel

T: bitter lemon peel. grapefruit pith, resin

F: medium plus carbonation

O: This one didnt do it for me. Felt the balance was way off and not in a good way.

 249 characters

Photo of cpetrone84
3.8/5  rDev -4.3%
look: 5 | smell: 3.75 | taste: 3.75 | feel: 4 | overall: 3.5

Pour is transparent deep golden amber with a very tight white head. Nose is grain up front, hints of sweet malt, grapefruit, resin hop, and pine. Taste is sweeter but not sugary. Sweeter malt with decent grain bill. Hops have hints of citrus and grapefruit, moderate bitterness and resin and pine in back. Medium to full body with moderate carbonation and a creamy feel.

 373 characters

Photo of BeerManDan
3.53/5  rDev -11.1%
look: 4 | smell: 3.5 | taste: 3.5 | feel: 3.5 | overall: 3.5

Not really a repeat buyer of this ale. The flavor was not as much as grapefruit but of watermellon with a very bitter twist. Good flavor, but not to my liking.

 161 characters

Photo of Jadjunk
3.64/5  rDev -8.3%
look: 4 | smell: 3.75 | taste: 3.5 | feel: 3.5 | overall: 3.75

“India pale ales harness the inherent flavor characteristics of hops to bring forward familiar flavors of pine, resin, spice and citrus. In some cases, those botanicals are so potent, they exactly mirror specific edibles. Such is the case with Centennial hops, which hail form the great Northwest and come across on the palate like a mouthful of citrus fruit. That sensation is amplified with this, the first beer introduced via the Stochasticity Project, a double IPA brewed with Centennial, Chinook and Magnum hops as well as an immense dosing of fresh grapefruit peel. The result is over-the-top bittersweet grapefruit intensity that is at once refreshing and bracing in its citrusy bitterness.” Brewed in the style of an American IPA with fresh grapefruit peel added. Available as a one-off batch in 22 oz. bottles and on limited draft.

Poured from a 22 oz. bottle to a Stone pint glass. Served above 54 degrees Fahrenheit.

(Appearance) Grapefruit Slam pours a golden-white soapy froth consistency head over a densely hazy amber body with plenty of pulpy sediment in tow. Carbonation is plentiful and assertive. Retention is good, lacing is light and curtained. 4

(Smell) Aromas of citrusy, piney, resinous and fruity hops coalesce atop a fairly simple malt base, some pale and light caramel syrup with a moderate sweetness. The hop bitterness is equally potent to match. Potency is moderate. 3.75

(Taste) Biscuity and spicy malt base with a big hoppy bitterness and less hop flavor. Faint grapefruit peel comes through the most, with peppery and citrusy hops a lesser impact. Fairly assertive-bodied for an American IPA. 3.5

(Mouthfeel) The texture is slick, moderate oily and lightly chewy. The carbonation is moderate and zippy for a medium crisp mouthfeel. The body is medium/heavy for the style and medium+ overall. Balance is bitter over sweet. Alcohol presence is low, and there are few off characters. 3.5

(Overall) In predictable Stone fashion, Grapefruit Slam delivers the slam most notably in the assertive bitterness, although the hop flavor doesn’t quite match the boldness that the hop bitterness suggests. Therefore, it’s a more delicate sipper than most west-coast style IPAs. Its age is certainly evident that it was better once than it is now, thus I don’t recommend seeking out a bottle of this on an account of it being far past its prime. 3.75

Stone Brewing Company’s
Stochasticity Project: Grapefruit Slam IPA

 2,464 characters

4/5  rDev +0.8%

I think Stone released this without stamping their label on it. You didn't need to be genius to know it was a Stone Brew beer. One sip and you just knew it was a Stone beer

 172 characters

Photo of hophugger
3.98/5  rDev +0.3%
look: 3 | smell: 3.75 | taste: 4.25 | feel: 4 | overall: 4

What can I say but WOW!!!. Good job on this one. Pours a slight cloudy, golden. Head is a beautiful finger and a half which goes away slowly and leaves amazing lacing. The aroma gets me excited and the taste and mouthfell gets me even more excited. The hops dominates(I love it) and the grapefruit is nice but I personally would like a little more. Probably one of the best beers I have had from Stone, probably one of my top ten ever!!. Can't wait to try more of the Stochasticity Project. Hell yea, amazing, great job,. Don't miss this one beer people !!!

 557 characters

Photo of Drumside
4.98/5  rDev +25.4%
look: 5 | smell: 5 | taste: 5 | feel: 4.75 | overall: 5

This beer is probably an acquired taste but believe me it really, really, really hits the spot on a hot summer' day or evening in the SW desert! Slightly tangy with grapefruit which is most definitely discernible without spoiling the taste of a light pilsner style more than IPA in my opinion, but ultra refreshing. Beware - it's strong! That's the IPA kick :) I can't get enough if it!

 386 characters

Photo of humuloner22
4.02/5  rDev +1.3%
look: 4 | smell: 4.5 | taste: 3.75 | feel: 4 | overall: 4

This is a good beer. Not one of Stone's best beers by any stretch but it was solid. I thought it had a nice color to it nice head retention and the aroma was glorious. The taste is where I had issue.

Color: Golden hazy with nice head retention.

Smell: Grapefruit, hops, lots of resinous hops, some pine, some earthy notes going on. Smells great.

Taste: Too much resin in this, it really is like drinking a bitter grapefruit rind, and it was too bitter on my palate in that regard. I didn't think it had enough malt to balance out the bitterness, it was a just a bitter bomb and a one note wonder in that respect. I was totally worth trying out. But it is not something I would ever buy again. Stone has too many other beers I know are better and cheaper.

 757 characters

Photo of KYGunner
3.89/5  rDev -2%
look: 4 | smell: 4.25 | taste: 3.75 | feel: 3.75 | overall: 3.75

As would be appropriate, this has a pink grapefruit color with a cloudy fresh squeezed hue. The head was fizzy and white but held its shape well.

The nose has tremendous grapefruit qualities but it's a combination of juice, pith and hop.

The flavor starts with a nice grapefruit juice and grapefruit hop flavor but the finish is a deeply herbal hop flavor. The hop flavors near the end remind me of so many Stone products with an earthy, grassy, chivey and dank quality.

The feel is quite tangy and light but does have a strong astringency.

This tastes like an IPA made by Stone with grapefruit juice, which is exactly what it is.

 634 characters

Photo of Duhast500
4/5  rDev +0.8%
look: 4 | smell: 4 | taste: 4 | feel: 4 | overall: 4

Poured from the bottle into a La Fin Du Mode stemmed glass.

The color is a clear yellow/gold with two fingers of foamy white head and some nice lacing left on the glass.

The smell is filled with grapefruit aroma and has a real juicy fruit flavor. The hops seem to be right down the center and pops several times. There is a nice lemongrass aroma that makes the mouth water for a taste.

The taste of this beer is giving the grapefruit flavor that was promised by the name. The bitterness hangs over this beer like a canopy with some touches of earthy grass flavor mixed in a grainy center. The bitterness comes back towards the end to slow down things like a speed bump.

The feel of this beer is medium bodied with a nice drinkable, refreshing feel. A great I PA that brings the flavor and is quite enjoyable.

 812 characters

Photo of srandycarter
4.07/5  rDev +2.5%
look: 3.5 | smell: 4 | taste: 4.25 | feel: 4 | overall: 4

A - Pale light fuzzy orange/yellow, not much head, not much lace.

S - Sweet malt and bright citrus.

T - Malt and BAM huge grapefruit and bitter. More peely grapefruit than hopish.

M - Medium body, ok carbonation, good balance.

D - Nice beer. A little strange as the grapefruit doesn't taste like your normal grapefruit hops.

 329 characters

Photo of tripp888
4.74/5  rDev +19.4%
look: 4.75 | smell: 5 | taste: 4.75 | feel: 4 | overall: 4.75

I am in love with grapefruit and this hits the spot, just like biting right into a bitter grapefruit in the morning! Great smell as soon as you open the bottle and the great bitterness of a real grapefruit on your first sip and the aftertaste doesn't stop!

 256 characters

Photo of Mojo
4.29/5  rDev +8.1%
look: 4.25 | smell: 4 | taste: 4.5 | feel: 4.25 | overall: 4.25

22 ounce bomber -> Dogfish Head Snifter

A - copper to gold, fairly clear with some visible particulate, initial head is two fingers settling into incredible retention, and incredible lacing.

S - pine, citrus (grapefruit, orange, lemon), bread, earth notes, spices

T - This is a very hop forward beer. The sweet malt is sort of sublime in the mix but the massive punch in the end is pretty awesome. There is definitely some pine there, but it also has a definite orange peel inside flavor to it.

M - good all the way around with great carbonation and less of an aftertaste than would be expected for a beer packed with this much flavor.

O - I think they got what they were aiming for. This isn't an everyday beer. I don't think it was meant to be, but it is an awesome treat for the occasion when you just want something a bit more powerful than the usual rotation of shelf beers.

 888 characters

Photo of sanzenapocalypz
4.29/5  rDev +8.1%
look: 4.5 | smell: 4.25 | taste: 4.25 | feel: 4.5 | overall: 4.25

Appearance- poured from a deuce deuce bottle into a wide flute glass. Maybe about a quarter ince of head with small bubbles. After the head subsides, theres still a small layer of foam on the top. Looks great. This beer has a slightly darker orange hue to it, just a tad darker than the peel of a grapefruit. Minimal lacing, it looks nice in this glass as the lacing is all drawing from the middle of this glass.

Smell- bittersweet citrus of course, maybe a bit more on the bitter side honestly. The Centennial hops are very prevalent, as you should expect from an IPA like this. Smells like a tasty alcoholic grapefruit drink.

Taste- As the beer goes down, the grapefruit really gets to you right at the back of your mouth. WONDERFUL for those who like that bitter hoppy goodness that comes with IPAs. The grapefruit really subdues the maltiness of this beer.

Mouthfeel- medium bodied, maybe a bit heavier bodied than some IPAs, very smooth and silky to the tongue, moderate carbonation. Crisp and a nice dry finish that is not to powerful.

Overall- this is a pretty good IPA. There are plenty out there that I have enjoyed much more, but this is definitely a pretty enjoyable IPA. It is not very complex however, as the grapefruit peel taste subdues the front end of its taste. Has a great hoppy bitterness to it that we all love in IPAs, but its only drawback is that it tastes SO much like grapefruit and hops that this is about all there is to this beer. If that's what you want from it, however, it delivers with much success.

 1,536 characters

Photo of ADZA
3.58/5  rDev -9.8%
look: 3.75 | smell: 3.75 | taste: 3.5 | feel: 3.5 | overall: 3.5

Pours a hazed golden yellow hue with a wispy one finger head and a rim of lacing,the smell is strong grapefruit as one would expect along with some citrus nothing else really gets a look in the grapefruit is very strong,the mouthfeel is full bodied with slight carbonation and the first taste is quite bitter with a smack of grapefruit then on second sip I get more of the citrus and candy sweet malts with the grapefruit still there but a little more subdued but on finish its all about the grapefruit bitterness and overall something I've glad I tried but not something I'd come back to as my go to IPA cheers.

 612 characters

Photo of seedyone
2.73/5  rDev -31.2%
look: 3 | smell: 3 | taste: 2.5 | feel: 2.75 | overall: 2.75

03/03/14 From Bottle. Not quite what I was expecting. I was looking for that slight pucker one gets from Cigar City's Jai Alai IPA but what I got was much more subtle. Not being a big hops fan I am coming around to some of the more well balanced brew & in particular those that let the unique flavor of Citra hops shine through.

This project, although it shares the essential flavor 'profile', it's obvious how it is applied makes all the difference in the world. Experience dictates one must be extremely careful when using citrus peel & zest. Too much of the cottony pith in any application can give an undesirable bitterness. I would have preferred just a touch of sugar or similar sweetener to round out/mute the bitterness I detected.

I'm glad I tried it but I'm not sure if I'd buy the tee shirt.

 806 characters

Photo of Shamus89
4.4/5  rDev +10.8%
look: 4 | smell: 4 | taste: 4.5 | feel: 5 | overall: 4.5

appearance: Golden with some yeast floating around from the ride home

smell: nice citrus and hop smell

taste: great flavors of grapefruit with some pine at the end

mf: pleasant

O: Glad i picked this up. was disappointed the store ran out of Enjoy By but this made up for it. will buy again if i see it.

 306 characters

Photo of iheartmyTHO
3.75/5  rDev -5.5%
look: 3.75 | smell: 3.75 | taste: 3.75 | feel: 3.75 | overall: 3.75

The first sip was a bit rough - very dry and lots of bitterness. But after a few more sips, the bitterness subsided and I could actually taste the grapefruit, or more like the grapefruit pith. Normally that's not a taste I'd want, but it works out well in this beer.

 266 characters

Photo of ClePaul
4.49/5  rDev +13.1%
look: 3.75 | smell: 4 | taste: 4.75 | feel: 5 | overall: 4.5

Stochasticity Project Grapefruit Slam IPA

Look 7/10
Smell 18/20
Taste 38/40
Feel 10/10
Drinkability 19:20

Overall 92/100

Solid IPA jammed with Dry Citrus flavors, packs a very flavorful wallop! Tastes like the white stuff on a grapefruit peel, I could def get use to drinking this. Sticky but smooth, really much to way to drink at 8.2~

 341 characters

Photo of rangerman21
4.09/5  rDev +3%
look: 4 | smell: 4.25 | taste: 4 | feel: 4.25 | overall: 4

Appearance: Golden and cloudy with a white head.

Smell: Very hoppy, citrus notes

Taste: A little metallic at first? Then bitter, with a distinctive grapefruit finish. The it lingers the stronger the grapefruit.

Mouthfeel: Very light and pleasant.

Overall: Grapefruit squeezed into a good IPA. Very good drinking and pleasant taste.

 335 characters

Photo of Mdog
3.65/5  rDev -8.1%
look: 4 | smell: 3.25 | taste: 3.75 | feel: 3.75 | overall: 3.75

Appearance: Gold, good head.

Smell: Mild citrus, maybe slightly oxidized.

Taste: Citrusy, very dry. Some mild sweetness comes through. Definitely west coast style IPA. No more "grapefruity" than your standard DIPA.

Overall: Picked this up in Omaha during a work trip. Might be just a little old as the smell was pretty weak, but the taste was fine. Actually less grapefruity than I thought it would be. Pretty good.

 418 characters

Photo of PBRmeasap1980
4.11/5  rDev +3.5%
look: 3.75 | smell: 4 | taste: 4.25 | feel: 3.75 | overall: 4.25

A - Straw colored with white head and chuncky lacing.
S- Citrus smell comes through well with grapefruit being the primary. Piney hops also prevelant.
T - Solid, well balanced IPA with nice sharp hops and the tart/sweet grapefruit tucking into your cheeks.
M - Standard single IPA feel. Nice and smooth.
O - Very enjoyable. I wish I had it a bit fresher...6 months since bottling.

 380 characters

Stochasticity Project: Grapefruit Slam IPA from Stone Brewing
Beer rating: 3.97 out of 5 with 2,045 ratings