Processing aid
Is Isinglass halal?
A collagen fining made from fish swim bladders, used to clarify wine and some cask ale. Identity is not in doubt. A sourced ruling is. The alcoholic drink is a separate question from the additive. Until a named certifier or scholarly body is cited, Muttoo does not assign a verified label.
A collagen fining made from fish swim bladders, used to clarify wine and some cask ale. Identity is not in doubt. A sourced ruling is. The alcoholic drink is a separate question from the additive. Until a named certifier or scholarly body is cited, Muttoo does not assign a verified label.
What the sources say
Isinglass is fish swim-bladder collagen used as a fining. No sourced ruling attached yet.
Where you will run into it
- Fined wine
- Cask ale
How to check it yourself
Vegan wine/beer statements usually mean isinglass was not used. The drink being alcohol is a different question.
Quick facts
| Name | Isinglass |
|---|---|
| Also on labels as | fish glue, isinglas, fish bladder fining |
| Additive class | Processing aid |
| Classification | Insufficient evidence |
| Last verified | 2026-09-16 |
Common questions
Is Isinglass halal?
Isinglass is classified as Insufficient evidence. A collagen fining made from fish swim bladders, used to clarify wine and some cask ale. Identity is not in doubt. A sourced ruling is. The alcoholic drink is a separate question from the additive. Until a named certifier or scholarly body is cited, Muttoo does not assign a verified label.
Is Isinglass halal or haram?
On the evidence cited on this page, Isinglass is insufficient evidence. Not enough reliable source evidence to classify Every position is attributed to a named certifier or scholarly body with a link, so you can verify it directly.
What else is Isinglass called on ingredient labels?
It can appear as: fish glue, isinglas, fish bladder fining.
Where does this page's information come from?
Every position on this page is attributed to a named certifier or scholarly body with a direct link, listed under 'What the sources say'. Muttoo aggregates and cites; it does not issue rulings.
Related lookups
Record ingredient-isinglass · last verified 2026-09-16 · report an error