A source told The Sun: 'Admittedly, this is no Hey Jude.
'But it might provide some nice background noise for a true Beatles fan. Or a vegan.'
The quirky collaboration came about after Macca met the band at an awards show, and after allegedly 'playing' celery on Beach Boys' 1967 song Vegetables, the star agreed to lend his chewing skills for their track.
Unexpected: Sir Paul made a recording of himself muching on some food 20 years ago and gave it to Welsh band Super Furry Animals
Super Furry Animals keyboardist Cian Ciarán said: 'He was going to come to the studio and then decided not to for some reason.