On BBC3. The presenter investigated what went into many of Britain's cheaper food items,this episode focussing on Burgers.
I personally didn't understand the disgust he and others had with burgers containing a Cow's heart. I grew up in a poor family, where Cow's Heart, Pig Tail and Trotters were the norm.
For goodness sake, most supermarkets sell ox tongue and no one seems to think that's vile. I mean those same tongues have probably been licking other Oxon bottoms.
We also have no problem with eating the other organs of animals, like their livers, kidneys and intestines.