Dorota notes (May 2018)
I have contacted Brewtonic, an Irish brewery, and they have confirmed they don't use Isinglass and their beers are Vegan Friendly."
Brewtonic 011 Black Rye Ale
by Brewtonic
Vegan
This product is listed as vegan friendly.
What the company told us
Correspondence on record, with the date of each entry.