Beef liver...

[somethingelseishere]

I still feel kinda high from it.

I always got a warm sensation on the back of my neck after eating liver.
There was a definite "umph" to my system afterwards, every time.

Could be a niacin rush. It's known to make people feel flushed especially
if you're new to it. 

Slightly unrelated - a long time ago [30 yrs? lol] I had lingua tacos for the first
AND last time. Not very nice. Tasted a bit like liver. Which is what put me off even
though I liked liver. Oh well. I still like liver, I need to get some soon.