My SIL Lilian used to slice it thinly and dip it in flour egg breadcrumbs and fry it in butter like schnitzel and it was ok.Funny how we are, when we realize things like that the liver filters, but it's always well cleaned before cooking. lol
Liver depends on how it's cooked, some cook it to death and it's worse than shoe leather, my dad did a good job with onions and potatoes, my aunt used to cook it in red wine.
I don’t like it so never cook it myself. I can eat kidneys but no other offal food. Sheep brains and tripe was something I had in childhood and cannot stand either yuk!