On the beer aisle, two bottles can both say “gluten-free” without telling anything close to the same story. One is brewed from grains and pseudo-cereals that never contained gluten in the first place; the other is a classic barley beer whose gluten has been broken down through an enzymatic treatment. On the label, the difference comes down to one word. In a glass, for someone with coeliac disease, it can matter a great deal more.

Why regular beer is a problem

Traditional beer is brewed from barley malt — sometimes with added wheat, as in wheat beers. Barley and wheat both contain gluten, and some of their proteins end up in the finished product. Regular beer is therefore one of the basic foods excluded from a strict gluten-free diet, right alongside wheat bread or pasta.

Faced with this, brewers have developed two very different responses.

Option 1: naturally gluten-free beers

The first approach is to brew from ingredients that are naturally free of gluten: millet, buckwheat, rice, corn, quinoa, sorghum, and more. These beers never come near barley or wheat: there’s no gluten to remove, because there was never any to begin with.

Long a niche category, these beers have made huge strides in flavour, driven by specialist craft breweries. Buckwheat brings toasty notes, millet a grainy roundness — a far cry from the watery early attempts of fifteen years ago. For someone with coeliac disease, this is the simplest option to reason about: the risk comes down to how rigorous the brewer is about raw materials and production line hygiene, just as with any other gluten-free product.

Option 2: gluten-removed beers

The second approach starts from a classic barley beer, to which the brewer adds an enzyme that breaks the gluten down into small fragments. The finished product can then test below the European regulatory threshold of 20 mg/kg (20 ppm) and carry the “gluten-free” label in most European countries.

The advantage is obvious: the taste. A gluten-removed beer is a “real” barley beer, often indistinguishable from the original. Many major brands have taken this route.

A “gluten-free” beer whose ingredients list includes barley malt is a gluten-removed beer, even if the label doesn’t say so. Its below-20 ppm result is debated, and several coeliac associations recommend a naturally gluten-free beer instead.

The catch: a measurement that doesn’t tell the whole story

This is where the nuance matters. The gluten in these beers hasn’t disappeared — it has been broken into fragments. Standard tests used to measure gluten were designed to detect whole proteins, and their reliability on partially degraded gluten fragments (peptides) is debated. A result of “below 20 ppm” on a gluten-removed beer is therefore harder to interpret than the same result on a millet beer: whether any remaining fragments can still trigger a reaction in people with coeliac disease is not a fully settled question.

The direct consequence: several coeliac associations take a cautious stance on gluten-removed beers, and recommend that people with coeliac disease favour beers brewed from naturally gluten-free ingredients instead. Labelling rules also vary by country: some do not allow these beers to carry the “gluten-free” claim at all and require separate wording.

The two options side by side

Naturally gluten-free beer Gluten-removed beer
Ingredients Millet, buckwheat, rice, corn, quinoa… Barley malt (a gluten-containing grain)
Gluten Never present Broken down by enzymatic treatment
< 20 ppm reading Straightforward to interpret Interpretation debated (fragments)
Taste Increasingly convincing Nearly identical to regular beer
For coeliacs The safest option Caution advised by coeliac associations

In practice: what to choose, what to ask

  • If you have coeliac disease: the safest choice remains a naturally gluten-free beer — and if in doubt, your doctor’s advice and that of your coeliac association take precedence over any label.
  • If you have non-coeliac gluten sensitivity: let your personal tolerance guide the choice; many sensitive people drink gluten-removed beers with no discomfort.
  • In every case: read the ingredients list. A gluten-free beer brewed from barley malt is, by definition, a gluten-removed one — even if the label doesn’t highlight that word. Our full checklist is in our guide on how to read a gluten-free label.
  • At a bar or restaurant: ask to see the bottle. “Gluten-free” on a menu almost never specifies which family it belongs to.

Good news: fully gluten-free venues are stocking more and more millet, buckwheat, or rice beers — a good excuse to raise a glass with no second thoughts. You’ll find them on the Nutrixe map, checked one by one.

This information does not replace medical advice. If you have coeliac disease, talk about gluten-removed beers with your doctor or patient association — and remember that alcohol should be consumed in moderation.