They’ll be removing something called isinglass. That’s a byproduct of fish bladders made into gelatin.

Fox News reports isinglass was used to filter yeast particles from the beer.

Guinness is said to be planning the change at its plant in Ireland for 2016.

The popular beer is brewed in 49 countries, but the change will only happen at the flagship brewery in Ireland.

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Eri Saikawa (left), an environmental science professor at Emory University, and Jiyoung Hwang, environmental health and epidemiology researcher, set up a sensor to monitor heat exposure in the backyard of a study participant on Tuesday, Aug. 5, 2025. For the last two years, the Emory team has been monitoring Atlantans’ exposure to heat and air pollution inside and outside their homes using sensors and wearable monitors. (Natrice Miller/AJC)

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In this file photo from October 2024, Atlanta Braves outfielder Jorge Soler and teammates react after losing to the San Diego Padres 5-4 in San Diego. The Braves and Soler, who now plays for the Los Angeles Angels, face a lawsuit by a fan injured at a 2021 World Series game at Truist Park in Atlanta. (Jason Getz/AJC)

Credit: Jason.Getz@ajc.com