Stone Delicious IPA Gluten Information

In addition to being incredibly flavorful and hopped in our typically heavy-handed way, Stone Delicious IPA is also fermented in a manner that breaks down and removes gluten, rendering gluten levels so significantly that the beer qualifies as a “gluten-reduced” ale per the U.S. Food and Drug Administration. It’s a nice bonus that will allow nearly everyone out there to enjoy our bold style of craft beer.

For those for whom gluten is a concern, numerous questions are bound to spring to mind so we'll do our best to answer them below. Of course, if you still have questions, just shoot us an email at email@stonebrewing.com.

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Gluten Content in Bottles

Before bottling, we carefully clean and sanitize every tank, pipeline, hose and piece of equipment that Stone Delicious IPA will touch, and conduct numerous tests at our brewing facility checking for gluten levels.

See test results

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Gluten Content on Draft

Unfortunately, we can't make claims about the gluten content of this beer when served on draft. While the beer in the keg is the same as the beer in the bottles, there is always the chance that it could mix with previously served beers in the lines of the draft system and, thus, pick up gluten along the way.

We have colleagues at our longtime yeast supplier, White Labs to thank. It’s their enzyme, Clarex, which makes Stone Delicious IPA possible. We start by brewing the beer exactly like we do every other beer at our brewery, using all-natural ingredients (barley, hops, water and yeast, exclusively) with dashes of creativity and heart plus a boatload of hops. When boiled wort (unfermented beer) is transferred to fermentation tanks where yeast is introduced to convert fermentable sugars to alcohol, we add Clarex, which separates and eliminates the potentially inflammatory nature of the gluten protein chains.

Though we’ve harnessed modern advances to significantly reduce the amount of gluten, traces of gluten remain in Stone Delicious IPA. However, the amount of gluten in this beer is far below the Codex threshold of less than 20 parts per million in total gluten for “gluten-free” products; so much so that its gluten levels are too low to be measurable by available testing methods. Furthermore, the brewing process for Stone Delicious IPA renders the beer free of barley epitopes (peptide sequences and reactive sites in gluten molecules triggering negative reactions in the small intestine).

We take numerous, specific steps to ensure there is no cross-contamination in our brewing or packaging facilities. We carefully clean and sanitize every tank, pipeline, hose and piece of equipment that Stone Delicious IPA will touch, and conduct numerous tests at our brewing facility checking for gluten levels.

The gluten testing is conducted using an ELISA assay, the R5 competitive Gliadin assay from R-Biopharm. Yes, that is a mouthful, so allow us to further explain. The ELISA assay quantifies the prolamins from the wheat, rye and barley using an antibody that recognizes the potentially inflammatory sequence QQPFP, which occurs repeatedly in the prolamin molecules. This is the only method of gluten testing for products containing alcohol that is approved by the federal government.

Each bottle of Stone Delicious IPA has both an “enjoy-by date” printed on its bottlenecks and a “julian date” laser-engraved on the bottom of each bottle. You can use either of these denotations to retrieve test results below.

No. We do not replace the barley malt we use for our other beers with rice, quinoa, sorghum, buckwheat or any other grains.

Stone Delicious IPA is distributed to every state where Stone beers are sold, including the District of Columbia and Puerto Rico. The best way to locate retail accounts where Stone Delicious IPA is sold by consulting our online Stone Beer Finder.

Because the draft accounts where we distribute our kegged beer would have to basically have independent dedicated lines via which to serve Stone Delicious IPA—something that isn’t feasible for the majority of bars and restaurants—the beer will likely be served from lines that have previously served non-gluten-reduced beer. Therefore, we cannot guarantee that the gluten levels of the beer will be the same when served in such a manner.

While the beer in the keg is the same as the beer in the bottles, there is always the chance that it could mix with previously served beers in the lines of the draft system and, thus, become intermingled with beer containing gluten. To be safe and ensure the health of those with greater gluten sensitivity, we similarly do not make the gluten-reduced claim for Stone Delicious IPA served from draft systems and growler fill stations at Stone-operated facilities. It is best to purchase Stone Delicious IPA in bottles if you are gluten sensitive.

There are no current plans to brew more gluten-reduced beers, but years of brewing experimentation have taught us never to say never when it comes to craft beer!

Enjoy by dates are printed on the neck of each bottle, and julian dates are laser engraved or printed near the bottom of the bottle. Note that bottles coming out of our Richmond brewery and our Escondido brewery are slightly different, and help identify where that beer came from. Julian dates can be difficult to see, so it may be helpful to look at the bottle under a light or shining a light through the bottle.

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Information including enjoy by date, bottled on date, and which brewery bottled the beer can be found on the bottle's shoulder.
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The julian date can be found near the bottom of the bottle. It can be helpful to look closely at the bottle under direct light to help find it.
 

Stone Delicious IPA Gluten Level Lab Results

Brewed In
Enjoy By Date
Julian Date
View Report (PDF)
Escondido, CA
2017-01-24
23116XXXX
Escondido, CA
2017-01-22
29916XXXX
Escondido, CA
2017-01-17
29416XXXX
Escondido, CA
2017-01-16
29316XXXX
Escondido, CA
2017-01-15
29216XXXX
Escondido, CA
2017-01-13
29016XXXX
Escondido, CA
2017-01-10
28716XXXX
Escondido, CA
2017-01-09
28616XXXX
Escondido, CA
2017-01-08
28516XXXX
Escondido, CA
2017-01-04
28116XXXX
Richmond, VA
2017-01-04
28116XXXX
Escondido, CA
2017-01-01
27816XXXX
Escondido, CA
2016-12-29
27616XXXX
Escondido, CA
2016-12-26
27316XXXX
Escondido, CA
2016-12-25
27216XXXX