Guinness Goes Vegan: Stout Agrees to Stop Using animal Bladders in Brewing Process for First Time in 256 Years
2nd November 2015
The famous Irish stout is to become vegan friendly for the first time in its 256-year history, as the company halts the use of fish bladders in its brewing filters.
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Isinglass has been used since the 19th Century and while large quantities of the agent are filtered out during the brewing process, there are still traces of fish bladders in the finished product.