An internal memo seen by The Sun revealed that the new paper straws actually can not be recycled, the document reading: "Paper straws are not yet recyclable and should be disposed of in general waste until further notice".
Last year, it axed plastic straws, even though they were recyclable, in all its United Kingdom branches as part of a green drive.
However, now it has been revealed the straws currently can not be recycled, their attempt at adopting a more "eco-friendly" culture has been called into question.
"But it seems like it was a stunt to appease green campaigners because the things go straight in the rubbish".
Regardless of their supposed green credentials, the straws were a flop with a small collection of customers who complained they "dissolve" in milkshakes, go mushy in soda, and change the taste of drinks.
McDonald's recently chose to end the use of plastic straws in their 1,361 restaurants across the United Kingdom and Ireland under increasing pressure to make the shift towards a more sustainable choice.
He told The Sun: "Everyone is switched on [to] environmental discussions, but the big firms need time to understand what they're doing".
Former climate change secretary Ed Davey said, according to the Daily Telegraph: "It really can't be that hard to replace plastic straws. People will be left wondering where this was just greenwash or a monumental c**k-up".
Friends of the Earth's Julian Kirby called on McDonald's to axe all straws. We should be thinking about how to avoid waste creation.
McDonald's is now working on an alternative to the problem, but advises users to put their straws in general waste as they sort out the issue. Following widespread criticism of the new straws on social media, over 50,000 surprisingly angry people have added their signature to a petition asking to bring back the old plastic straws.