Don't you think there should be an interaction between orcs and man-flesh?
Here I suggest:
a special mini-quest where they ask some man-flesh to players (it could be implemented in all possibilities for gathering food mini-quests)
When there is man-flesh to the ground nearby, orcs would rush to take and eat it. Opposing to orc-draught or maggoty bread, man-flesh would fully restore their health bar in one shot. (if you worry your own hired orcs steal man-flesh you want harvest, only non-hired orcs would look for man-flesh at ground)
And finally, the possibility to directly give man-flesh to an orc by right-clic on them by holding a hunk of man-flesh. Doing it would give +1 alignment to the faction of the orc to the player and/or the orc will give something to the player in return. (a bit like trading gold with piglins) They could give you orc steel, maggoty bread, orc-draught, morgul-draught, gulduril, rotten flesh, suspicous meat, bones, arrows, poison bottles, sticks and so on. But be warned! Orcs might don't give you anything and just say thanks. Because orcs are treacherous creatures! Don't expect much gratitude from them, even for some man-flesh.
The suggest is done. You can leave now.
Edit: And trading man-flesh with an orc would give you a new achievement: "Looks like meat back on the menu boys!"