My diet:

Malt vinegar

No E-numberAcidity regulatorsOrigin: Fermented
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Pick your family’s diets in the bar above.

Every diet

VeganYes

Malt vinegar is fermented barley, with no animal ingredient.

Gluten-freeNo

Malt vinegar is made from barley and is not distilled.

HalalDepends

Most certifiers accept vinegar. A few still question the trace alcohol.

KosherYes

Malt vinegar can be kosher. Barley is chametz and is avoided at Passover.

KetoYes

A splash of malt vinegar has negligible carbohydrate.

Low-FODMAPYes

The sugars were fermented. The gluten question is separate.

The short answer
Malt vinegar is barley vinegar. It is not gluten-free. It is vegan. It is fine for keto in the splashes used on food, and the FODMAP sugars were fermented away. The gluten was not.
Generally safe

Fine for most people at normal amounts.

E-numberNone
Comes fromFermented
What it doesAcidity regulators
Glycemic index—
Daily limitNot set
Also calledMalt vinegar, Barley malt vinegar

Rules by country

🇺🇸 US FDANot evaluated as an additive
🇪🇺 European UnionNot evaluated as an additive
🇨🇦 Health CanadaNot evaluated as an additive
CaliforniaNo extra rules

Malt vinegar is a food, not an E-number. Because it starts as barley malt, it contains gluten. A gluten-free fish-and-chips shop cannot swap it in quietly. Distilled white vinegar is a different bottle.

Daily limit: Experts haven’t set a number because normal food amounts are far below any level of concern.

What is it?

Brewers make a barley beer without hops, then let acetobacter sour it. The finished vinegar is aged so the flavor rounds off. Sprinkling it on chips is the British use. Picklers use it too.

Where it comes from: Malt vinegar is ale, made from malted barley, that has been fermented a second time by acetic acid bacteria until the alcohol becomes acetic acid. The malt flavor stays. The alcohol does not, except for traces.

Why it’s in food

  • Dresses fried potatoes
  • Pickles onions
  • Brightens a sauce
  • Cuts fried food

Often found in

Fish and chipsPicklesChutneysMarinadesPotato chipsTable bottles

Also listed as: Malt vinegar, Barley malt vinegar, Ale vinegar

Health & gut impact

Gluten survives the fermentConcern

The second fermentation turns alcohol into acetic acid. It does not destroy barley gluten. Distilled vinegar made from a gluten grain is the one that is considered gluten-free, because distillation leaves the protein behind. Malt vinegar is not distilled.

Celiac guidance distinguishing malt vinegar from distilled vinegar

A condiment doseBenefit

People eat malt vinegar by the teaspoon. At that amount the acetic acid is a flavor, not a meal. The gluten verdict does not scale with the teaspoon.

Typical use of malt vinegar

What can I use instead?

Acetic acid

Ratio: The acid in any vinegar, without the barley

Best for: Pickles that must be gluten-free

Barley

Ratio: The grain this vinegar starts from

Best for: Soups

Related

More acidity regulators:

Acetic acid E260Acetic acid (E260) is the acid that makes vinegar sour. Diluted in food it is considered safe. The hazard is the concentrated factory form, not a splash of vinegar.Generally safeAmmonium carbonate E503Ammonium carbonate (E503) is a traditional leavening agent that makes thin cookies and crackers crisp. It breaks down into gas in the oven, so little of it stays in the finished food.Generally safeCalcium acetate E263Calcium acetate (E263) is a calcium salt of acetic acid that steadies acidity and adds a mild tang in processed foods. It is vegan and gluten-free, and it is also a prescription phosphate binder at much higher doses.Generally safeCalcium carbonate E170Calcium carbonate (E170) is ground limestone, the same calcium found in antacids. It adds calcium to plant milks and flour and is very safe.Generally safe

Common questions

Is malt vinegar gluten-free?

No. It is made from barley malt and it is not distilled.

Is the alcohol gone?

The acetic fermentation converts the alcohol. Traces can remain. The bottle is sold as vinegar, not as beer.

Is Malt vinegar safe?

Generally safe (88/100). Malt vinegar is a food, not an E-number. Because it starts as barley malt, it contains gluten. A gluten-free fish-and-chips shop cannot swap it in quietly. Distilled white vinegar is a different bottle.

Is Malt vinegar vegan?

Yes. Malt vinegar is fermented barley, with no animal ingredient.

Is Malt vinegar gluten-free?

No. Malt vinegar is made from barley and is not distilled.

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Scientific sources & regulatory citations
  • Celiac guidance distinguishing malt vinegar from distilled vinegar
  • Typical use of malt vinegar