Kvass, Kombucha, and Kefir: Are They Permissible?

Answered by Shaykh Faraz Rabbani

Question

A friend offered me Kvass, a fermented bread drink with about 0.5% alcohol from natural fermentation, and I declined out of caution. In Hanafi sources, I read that the Imams of the school differed over drinks made from wheat and barley, and I also found a Hanafi fatwa permitting Kvass. Elsewhere, I found conflicting criteria: some look at the alcohol percentage, others at whether its taste or smell remains, and others at whether it intoxicates in large amounts. When my friend asked whether bread would then be unlawful too, I told him it is permissible because it does not intoxicate. Is Kvass permissible? What is the reliable criterion for fermented drinks like kombucha and kefir, and was I right about bread?

Answer

In the name of Allah, the Most Merciful, the Most Compassionate.

You did well to be cautious. You can set this worry aside.

Kvass at 0.5% alcohol is permissible. So are kombucha and kefir.

One Test: Does It Intoxicate?

The criterion you are asking for is one test: a drink is unlawful if it intoxicates when drunk in quantity, or if you drink it as an intoxicant. If so, a single sip of it is unlawful. If it does not intoxicate, it is lawful, no matter what trace of alcohol remains from fermentation or what the label says.

The Messenger of Allah (Allah bless him and give him peace) said, “Of whatever a large amount intoxicates, a small amount is unlawful.” [Abu Dawud; Tirmidhi; Ibn Maja] That is the relied-upon position of the Hanafi school, and it is the whole test.

The Disagreement Was About Drinks That Can Intoxicate

You read your sources carefully, but the disagreement you found was not about drinks like Kvass. It was about grain and honey drinks that can actually intoxicate if someone drinks enough.

Imam Abu Hanifa and Imam Abu Yusuf (Allah have mercy on them) said these drinks become unlawful when they intoxicate. Imam Muhammad (Allah have mercy on him) said they are unlawful in any amount, like wine. The school follows Imam Muhammad’s view. That view forbids every intoxicating drink, in any amount, whatever it is made from. It does not forbid everything fermented. A drink at 0.5% does not intoxicate anyone, no matter how much they drink. The rule you worried about does not apply here.

Wine from Grapes

The classical books do treat wine pressed from grapes as a case in its own right, declared unlawful and filthy by a decisive text, with other fermentations discussed separately [Kasani, Badaʾiʿ al-Sanaʾiʿ]. Since the school settled on Imam Muhammad’s position, that distinction no longer changes what you may drink: any intoxicant is forbidden, whatever its source. A bread drink that does not intoxicate stands outside both discussions. Allah Most High said, “O you who believe: wine, the feast-lottery, the stone sacrifice altars, and divining sticks are but filth of the work of the Devil, so shun it utterly, that haply you may succeed.” [Quran 5:90] What is forbidden is the intoxicant.

Bread Is Lawful Because It Does Not Intoxicate

You answered your friend well. Bread is permissible because it does not intoxicate. The law does not forbid fermentation itself. Ripe fruit carries alcohol, and fruit juice can ferment in the bottle. The school treats vinegar as lawful and pure, even if it started as wine. You can teach your friend this with confidence.

One Question When You Shop

When you shop, ask one question: Do people drink this to get drunk? If yes, leave it. If not, and it is a food or soft drink with a trace of alcohol from fermentation, you may buy it. Kombucha, kefir, Kvass, and bread are all lawful.

You do not need to seek out drinks made to look like wine or beer. Avoiding those is a personal choice, not a legal duty. Kvass is not one of them. It is a bread drink that grandmothers pour for children. Drink it without worry.

You do not need to weigh every fatwa you find online. Learn your school’s rules, and apply them with confidence.

Your care is a gift. Spend it on your prayer and your character, not on a bottle of Kvass. May Allah reward your caution, increase your knowledge, and make your table lawful and blessed.

Faraz Rabbani

Related Answers

• Is It Permissible to Drink Kombucha? — Kombucha is lawful in the Hanafi school, since its trace alcohol from fermentation does not intoxicate.
• Are Kefir and Kombucha Licit? — Kefir, kombucha, and similar drinks are lawful because their alcohol is natural and extremely low.
• Is It Permissible to Consume Foods That Contain Alcohol? — The ruling turns on whether alcohol acts as an intoxicant or sits in food as a non-intoxicating ingredient.