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.

UnverifiedNot enough reliable source evidence to classify

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 we know

The name is in the catalogue so you can find it. There is not enough evidence to classify.

What we don’t know

No external A or B source (certifier or scholarly page) is on file yet.

Why it matters

Not enough reliable source evidence to classify

What to verify

For Isinglass in this product: is the source plant, synthetic, or animal? If animal, which species and slaughter method?

What the sources say

Isinglass is fish swim-bladder collagen used as a fining. No sourced ruling attached yet.
Insufficient Evidence No grade A/B certifier page is cited yet. This row exists so the name is searchable. It is not a ruling. Muttoo catalogue desk (editorial note · grade C: secondary reference · accessed 2026-09-16)

Where you will run into it

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

NameIsinglass
Also on labels asfish glue, isinglas, fish bladder fining, fish maw, swim bladder, finings
Additive classProcessing aid
ClassificationInsufficient evidence
External A/B sourceNone yet

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, fish maw, swim bladder, finings.

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 · report an error