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It was actually the filtration system they were using it did have isinglass which is made from fish swim bladder! I believe that all stock in kegs and cans is now fully vegan. It took about 9 months to work through the older stock.

That is disgusting. Do you know if the old non vegan stock is gone?

Yep it sure is, as of end of last year I think its clear. Where are you based? I know here in Ireland all stock is now gone so only good aul vegan Guinness left. I am actually not drinking at all at the moment but I do love a stheak and stout pie!