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ASK A VEGAN

Is beer vegan?

Most modern beer is vegan, but some traditional cask ales still use isinglass (fish bladder) as a fining agent.

FOOD

Short answer

Most modern beer is vegan, but some traditional cask ales still use isinglass (fish bladder) as a fining agent.

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The detail

Guinness became vegan in 2016 by switching from isinglass. Most global lagers (Heineken, Stella, Corona, Budweiser) are vegan. Cask real ales in the UK are the highest-risk category.

Barnivore.com is the industry-standard reference for checking any specific brew.

When in doubt, stick to German beers, as the 'Reinheitsgebot' purity law limits ingredients to water, hops, barley, and yeast. A 2021 industry survey noted that the vast majority of craft breweries now use centrifuge or pea protein for clarification to make their products accessible to a wider audience. If ordering a cask ale at a pub, checking Barnivore or asking the bartender about the fining process can help you avoid hidden fish-derived additives.

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