Beef, pig’s liver, beet, parsley and onion burgers. My son’s latest favourite way to *really* enjoy liver! They are purple, they are tasty, they feel like a treat. Sometimes I even make sourdough buns for them to go in. . If you are cast-iron frying burgers that have liver in them, don’t scrimp on the fat or they’ll stick. I don’t mind not scrimping on the fat…it’s lard, after all :->