its not, but great story, here is the piece
But my favourite political myth involves Peter Mandelson. The story goes that he was buying supper at a chippie in his former Hartlepool constituency. He asked for haddock, chips and "some of that guacamole" - mistaking the mushy peas for avocado dip.
It's a perfect Mandelson story, involving his metropolitan tastes and ignorance of working-class life. But he never said it.
The mistake seems to have been made by a young American woman student who was helping Labour at a by-election. She, of course, had never seen mushy peas. Neil Kinnock claims to have attributed the story to Mandelson, as a tease.
And Mandelson's biggest mistake? He used his newspaper column to deny the story. That was fatal, since it only gave it legs - and now, like all other victims of political myths, he is stuck with it for life.
Simon Hoggart's Great Political Myths is on Radio 4 on Wednesday at 8.45pm