While the standard of pints typically available at a music event can leave many revellers feeling they’re consuming urine, that is actually the case for attendees at the Roskilde festival.

The Danish festival, which took place last week, recently debuted a new programme that recycles festival-goers’ urine to turn it back into beer, in a move championed by the Danish Agriculture & Food Council.

What is most surprising about the entire process is that the recycling project actually doesn’t just revert the wastewater back into clean and potable liquids. Instead, the industrious Danes collected tanks of urine at special ‘piss stops’, sending it on to be used as fertiliser on barley farms nearby.

The urine-harvesting stations at this year's festival 

The waste gathered from the 100,000 attendees this year will boost the barley’s growth, and this barley will then be used to produce beer sold at the 2017 Roskilde festival.

“Beercycling is about changing our approach to waste, from being a burden to being a valuable resource,” said the DAFC’s Leif Nielsen in a statement. “Today, the huge amount of urine produced at the festival is having a negative impact on the environment and the sewage system and treatment plant in Roskilde. Beercycling will turn those many litres of urine into a resource.”