Names to look for on labels
- brewers yeast
- spent yeast
What to do
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
More about brewer's yeast
Brewer's yeast is the yeast left over after beer is brewed. It is washed, dried and sold as a supplement rich in B vitamins, and used to make yeast extract spreads and seasonings.
The yeast is processed and contains no alcohol, which is why most scholars accept it. Strict mode flags it because it is a by-product of an alcoholic drink.
Is brewer's yeast vegetarian or vegan?
Yes. Brewer's yeast is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.
Why we classify it this way
Halal Brewer's yeast is a by-product of brewing, but the washed yeast is not alcohol. Strict mode flags it only because of where it comes from.
Basis: Halal; flagged only in strict mode. A concern is possible but unlikely and every usual source is permitted. Strict mode flags it for people who want to avoid even that.
Strict mode flags this as doubtful. The standard view does not, because a problem is unlikely and every usual source is permitted.
No external reference is listed for this record yet.
Classification audited 3 November 2026. It has not been reviewed by a scholar. How classifications work · Suggest a correction
Frequently asked questions
Is brewer's yeast halal?
Brewer's yeast is halal. Brewer's yeast is a by-product of brewing, but the washed yeast is not alcohol. Strict mode flags it only because of where it comes from.
Where does brewer's yeast come from?
Yeast left over from brewing beer.
Is brewer's yeast vegetarian or vegan?
Yes. Brewer's yeast is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.