Perhaps 'manky' is a London expression . Yes, when I was growing up we ate all kinds of things (liver, especially) that I wouldn't eat nowadays. My family wasn't badly off but in those days (the 60s/70s) people didn't seem to think as much about how wholesome (or otherwise) food was. Of course, given the prevalence of smoking, there were bigger health risks around than just a bit of extra fat on our meat 🙄.I like the expression "manky" !!! As a child growing up in Glasgow, we ate it. We were well fed and ate what was on our plate and it was fine. Now as an very mature adult........now way!!!!!!! It's disgusting BUT ours was bought from a local , reputable butcher , supermarkets were just begining and my mother would never have bought such a thing there. It's changed days as we have changed our tastes and widened our horizons.