'A pint please - and no fish': The rise of vegan beer

The Campaign for Real Ale (Camra) has called on breweries to produce more beer without a product made from fish.

Alongside traditional ingredients like hops and barley, many beers contain isinglass - a gelatine, made from the swim bladder of fish, that keeps the drink clear.

Among those to back Camra's call is Coventry brewery Twisted Barrel which makes only vegan beer.

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