Isinglass
This is what the ingredient is.
Isinglass is a form of collagen obtained from fish swim bladders, traditionally used to clarify beverages.
Here is why it shows up on the label.
Used to clarify wine and beer by binding to yeast and particles. Removes haze.
Here is what food agencies say.
The FDA lists it as Generally Recognized as Safe. European food agencies allow it. as processing aid. Traditional use for centuries.
Here is what research has found.
Effective clarifying agent. Most is removed during filtration. Traditional in British brewing.
Here are a few things worth knowing.
Derived from fish - not suitable for vegetarians or those with fish allergies. Trace amounts may remain.
Sources
- FDA GRAS List
- EFSA Scientific Opinion
- Journal of the Institute of Brewing
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.