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Milk products

Is kumis alcoholic?

Quick answer

Yes, but only slightly. Kumis, the fermented mare's milk of Central Asia, usually contains roughly 0.7 to 2.5 percent alcohol by volume, produced by yeasts during fermentation. Some traditional batches reported as stronger, and it can be made into stronger spirits by other processes.

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In this article
  1. Is kumis alcoholic?
  2. Why it contains alcohol
  3. How strong is it?
  4. How it tastes and is served
  5. Kumis versus kefir and ayran

Is kumis alcoholic?

Yes, kumis is mildly alcoholic. It is made from fermented mare’s milk, and the yeasts that make it fizzy also create a small amount of alcohol. Reported strength is roughly 0.7 to 2.5 percent alcohol by volume, which is weaker than most beers.

Why it contains alcohol

Mare’s milk has more natural sugar than cow’s or goat’s milk, so fermentation can produce more alcohol than in kefir, though it stays mild. Lactic bacteria sour the milk while yeasts make it sparkling and mildly alcoholic. Traditional kumis is made from raw mare’s milk; because that milk is scarce, industrial kumis usually uses cow’s milk fortified with sucrose or modified whey.

How strong is it?

Source or style Reported alcohol
General reference range About 0.7 to 2.5 percent
Longer traditional fermentation Some producers report higher figures

Sources disagree on exact figures and they vary by producer and fermentation time, so there is no single number. Check the label for ABV if you buy bottled kumis.

How it tastes and is served

Kumis has a light body, a slightly sour flavor and a mild alcoholic bite. It is served cold, traditionally in small bowl-shaped cups, and is a central part of hospitality in Kyrgyz summer pastures. Its texture is like kefir but thinner.

Kumis versus kefir and ayran

  • Kefir: made with grains, usually cow’s milk, usually only trace alcohol.
  • Ayran: yogurt, water and salt, not alcoholic.
  • Kumis: mare’s milk (or fortified cow’s milk), mildly alcoholic.

Kumis can be strengthened by freeze distillation or distilled into a stronger spirit called arkhi. Anyone avoiding alcohol, pregnant or driving should treat it as an alcoholic drink. This is general information.

People also ask

How much alcohol is in kumis?

Roughly 0.7 to 2.5 percent ABV according to a general reference, with some producers reporting more. Check the label.

Is kumis safe for children or pregnancy?

Treat it as an alcoholic drink and avoid it in those situations; ask a health professional if unsure.

Is kumis the same as kefir?

No. Kumis is made from mare's milk and has a thinner texture than kefir because it uses a liquid starter instead of grains.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. Yogurt at Home: Fermented milk products from all over the world: Chalap and Kumis, read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Dec 13, 2025 · Updated Nov 6, 2026
About · How we verify this · Editorial policy · Corrections

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