Does anyone eat liver any more? (Attention foodies, don't reply with anecdotes about foie gras)
When I was growing up, liver was the icon of disgusting food that was good for you. As such, children were required to consume it every now and then. Every kid could relate to the horror of liver night. There were even jokes about it; everyone tacitly understood the scourge of liver.
Seems like liver was always served with spinach. Not sure if that was a tactic for facing all of the unpleasantness in one fell swoop or if it was some evil plot that parents perpetrated on their kids to "build character".
Anyway, I never even hear it mentioned any more. Now I think broccoli holds the mantle of "worst tasting food that must be consumed for its nutritional content".