Beer Info FAQ

When did Guinness stop using isinglass?

When did Guinness stop using isinglass?

The 256-year-old beverage company will implement a new filtration system that takes isinglass out of the process, a spokesperson for Diageo, the multinational booze conglomerate that owns Guinness, confirmed to TIME Tuesday. The system should be in place by sometime in 2016.

Is Guinness filtered through fish bladder?

Brewers often use fish bladders, more formally known as isinglass, for the filtering of cask beers. The substance, which is gelatinous, is used to filter yeast and other unwanted solids from the beer.