Dear Mr. MIkael Karlsson,

Thank you for taking the time to contact us and for your interest in Guinness Draught nutritional information. In reference to your inquiry, isinglass, a fish product, is used during the clarification process as a magnet to get rid of excess yeast. To the strict Vegan, this would be an animal product and unsuitable. I hope this helps.

Once again, thank you for contacting us.

Sincerely,

Paul M

Guinness Consumer Representative

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