test the gluten content of your beer

lowgluten header

Asahi Dry Zero

asahidryzero-can    asahidryzero-ingredients

Asahi Dry Zero is a non-alcoholic (alcohol-free) “beer” that is made without a wort. Basically, that means it isn’t brewed… I think. It’s more like a soda, I suppose. That being said, when poured into a glass, it looks and smells a lot like beer. As far as taste goes, it’s one of the better non-alcoholic beers I’ve had.

Asahi claims that Dry Zero is the best-selling non-alcoholic beer in Japan. Neither barley nor wheat is listed in the ingredients, so I’ve been drinking it for the last few months under the assumption that it’s gluten-free.

Beer: Asahi Dry Zero
Producer: Asahi
Originating country: Japan
Brewing location: Japan
Can size: 350ml
Alcohol by volume: 0.00%
Ingredients: (translated from the Asahi website): dietary fiber, soybean peptide, hop, fragrance, acidulant, caramel color, antioxidant (vitamin C), sweetener (acesulfame K)
Miscellaneous: I usually add about 15-20ml of 190-proof grain alcohol (Spirytus Rektyfikowany or Everclear) per can when I drink Dry Zero, to more closely simulate real beer.

Test kit: Imutest Gluten-in-Food Kit

Test result: There is no indication of the presence of gluten. According to the instructions there should appear a clearly visible pink test spot on the left of the test area (T) to indicate the presence of gluten. But this test is negative. The pink spot on the right test area (C) is a control spot and indicates that the extract/sample is suitable, the test has been performed correctly, and all reagents are active. Even though the detection limit in this kit is very low (1-2 ppm) and the test is negative, please note this result does not constitute medical advice – please see Steffen’s facts page.


I conducted two tests.  The first time was with a can of Asahi Dry Zero, using the extraction solution provided with the kit.  No gluten was detected.  I wanted to be absolutely sure, so I contacted the people at Imutest, who told me that the test would be more sensitive without the extraction solution, so I ran the test again, this time with the bottled version, bypassing the extraction solution and adding the beer directly to the diluent solution.  That’s why you see both a can and a bottle in the pictures.  The results were negative (no gluten detected) in both tests.  Also, Peter at Imutest was quite helpful (and patient) when I had questions about the testing process.



Kingfisher Gluten Test


Steinlager Pure Gluten Test


  1. Avatar photo

    Hi big in japan,

    Thanks for the test. First non-alcoholic beer and result negative in both tests. Also form and pics are awesome. Thank you for contributing.

    Cheers Steffen

  2. Esther

    Can you buy this in the uk please?

  3. Bill B

    The best gluten-free non-alcoholic beer I’ve tried is this IPA: https://free-beer.co.uk/unltd-ipa/

    (available in the UK @Esther)

    • Avatar photo

      Thanks for the hint Bill. In summer I also enjoy non-alcoholic beer and the demand seems to increase. I stay with the German mainstream producer and their beer works for me (Warsteiner Herb Alkoholfrei, Jever Fun). Cheers Steffen

    • Paul

      Interesting link. “Gluten-free” is often used by many in the search to be wheat etc allergen free. Although the linked beer is stated to be gluten-free, unfortunately it is made from wheat and barley — I note this for those where this matters.

Leave a Reply

Your email address will not be published. Required fields are marked *

© 2024 lowgluten.org