Guinness

uses fish bladders in it’s production. I found thisout last week after drinking Guinness regularly to control my anaemia (no, not caused by beng vegan, I have a family history). here was the response from Guinness to my query..

For your reference, Isinglass is fish bladder .

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In answer to your query, we do use Isinglass for fining all GUINNESS. brewed beers. We can confirm that Isinglass is used in production of our beers. Isinglass is used widely in the brewing industry although it is extensively refined before use. Its sole purpose is as a fining agent to help remove yeast from our beer. While we accept that some minor traces of Isinglass may subsequently remain in the finished product, the European Food Safety Agency has recently expressed the view that the risk of adverse reaction by individuals to isinglass is very remote.

We are very happy with the technical performance of Isinglass in removing yeast although we are conscious that its use may represent a barrier to consumption of our products to some. As part of our ongoing efforts to further improve the way we make our products, we are seeking alternatives to Isinglass. To date, we haven’t found any alternative that is as effective and as environmentally friendly as isinglass.

So now you know! You may also be interested that most stouts are brewed in the same way. You are usually safe with lager but best to check it out, I am only at the beginning of my investigations here!