16 Sep 2016 --- Brewers are looking at alternatives to isinglass, a substance derived from the swim bladders of fish, used as a clearing or "fining" agent in their beers. According to the Good Beer Guide, published by the UK’s Campaign for Real Ale (CAMRA), more brewers are either producing unrefined beer that is slightly cloudy or using other clearing agents to avoid using isinglass to satisfy vegetarian and vegan drinkers.
