A former McDonald’s chef has revealed a secret menu item that only true fast-food fans know about – and it’s a “monstrosity” that combines two rival sets of protein – a Mc-Ménage à TroisA former McDonald’s chef has revealed a secret menu item that only true fast-food fans know about – and it’s a “monstrosity” that combines two rival sets of protein – a Mc-Ménage à Trois