For its "Piss to Pilsner" initiative, the Roskilde music festival plans to recycle concertgoers' urine and use it to fertilize malting barley

Under a cloudless sky, shirtless Vikings with plastic cups of beer in hand are queuing excitedly along a patch of sawdust-covered earth to urinate in a metal trough. Their “contributions” are being collected in specially designed storage tanks, which will then be transported to nearby fields to fertilise malting barley for brewing beer.

“From piss to pilsner” is a new initiative being launched at Roskilde – northern Europe’s largest music festival – in Zealand, Denmark, last week. Organisers hope to collect 25,000 litres of urine from more than 100,000 festivalgoers.

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