I voted eland but it ties with springbuck.
Had both and many if not most of the common and not so common meats in Africa. A springbuck stew at a reasteraunt in Cape Town was tender and to die for.
But minced eland over noodles in a stroganoff type gravy at Simon's camp in Mozambique was fantastic, as were the medallions of eland tenderloin, eland steaks, etc. That was Livingston Eland I tho k it may have actually been better than cape eland, but perhaps it was the setting being in that truly remote place.
Elephant tastes good if prepared well. But it takes a while to chew
However I'm not sure I could chew even the liver from an old giraffe bull.
As for the statements of meat being an in demand commodity in Africa, biggest understatement possible... My dog guy had wanted the leopard meat to feed his dogs. But by the time he got there, the camp staff had consumed or stashed it all for themselves. We had bait stolen from a tree. Innards, the only thing not consumed from my elephant was the penis, spine, hips, and some of the leg bones. I swear they rinsed out and ate the asshole...
Find some lone Shepard in the hills, hand him a plastic shopping bag full of everything from inside a klipspringer and make his day.