this & don't forget beef liver
Discussion
Liver seemed to have negative effects for me. Sluggishness maybe from too much VitA. Supposedly chicken liver could work, but I think oysters cover anything not already obtained from eggs & steak.
I do small amounts and in desiccated pill form because, even though I've been cooking most of my life and have made liver in many different ways, I don't like the taste and it can be such a trouble to keep fresh.