Chicken livers are widely available in supermarkets and from butchers and online suppliers. More often that not they'll come cleaned and ready for use. Simply pan fry them in butter for a few ...
Sliced thinly and quickly grilled, griddled or fried and served pink, liver is tender and full of flavour. Chicken livers can be pan-fried whole and served pink. Ox liver needs slow cooking ...
Why is liver fine (and some like only foie gras but won't eat veal or chicken liver) but heart is not? Some are OK with sweetbreads but horrified at the thought of eating lung or kidney.