I have a large chunk of beef liver, too much to eat in one sitting. I would prefer to cook it all up at once, but would it be palatable reheated? Would it be ok cold?
I hate to waste food and I always have too much liver. I use beef broth or bouillon so the liver does not dry out or get tough.
Slice up fresh onions if you don't have enough left over onion.
Slice cooked liver on the diagonal into 1/2" thick strips.
In saucepan, make up enough beef broth or bouillon to completely cover liver in pan (about 3 cups), Keep hot.
Saute fresh batch of onions, remove from pan and set aside.
Add hot beef broth to pan, lightly scrape bottom to deglaze onion flavor.
Add liver to boiling broth for about 30-45 SECONDS, just enough to heat them through. Quickly remove from heat and drain.
If desired, quickly toss onions in pan to reheat.
Serve onions over liver strips.
Palatability is largely a matter of taste...
Seriously, it will likely depend upon your cooking method. If you are cooking short high-heat, then reheating may well not work as well, as it will cook further and would likely become tough.
If you originally cooked in some kind of braising sauce, you are probably just fine to gently reheat, as the liquid should help to keep it tender.
Cold - mostly a matter of preference. OK for me might not be OK for you.
Ok, I looked at the answers and thought about how to try it. My 96 year old father said it was too tough when I reheated it the first time. Like everyone else I had too much left over. I sauteed more onions until they were almost burnt. I then cut the heat off and place a piece of liver that I had in the fridge, covered it with the onions and put a lid on it and let it sit for about 10 minutes on the off electric burner.
It was not super hot but he enjoyed it almost as if it was freshly cooked. Not tough at all. I can not eat it because of gout. Oh, I am just learning to cook at 66 years old.