A substance from fish bladder is used to make wine and beer.

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Isinglass
Image credit: Matt From London/CC BY 2.0

 

Isinglass
Image credit: Matt From London/CC BY 2.0

Isinglass is a substance found in the swim bladders of fish and once dried, it is used in the processing of wine and beer, particularly to make these beverages clearer.

 

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