It could be like this but in theory if MC creates something and that something leaves his body it should evaporate but if he infuses with energy it could theoretically work but that's the only way as if he rips out his own heart then when he regenerates it the ripped out heart should evaporate even if someone ate it, unless it got digested in that little time.
Also people like Devana and Deryl seem to be able to create "organic" material but only if it's not a living being or in the case of only Devana if it's just a mindless monster that function on "monster energy" so I don't think they're really nutricious
Well a few things about that:
1. Mc's body parts evaporate on open air very fast when severed from his body, it seens that this is because he can't infuse then with power anymore so they disssolve, however i remember very well how a Minyak ate part of Mc's body and recovered to the point of caring more about sex than food, it was pretty fast not even minutes.
2. Clone Deryl made a fully functional organ (kidney i guess) when he was trying to bang girl from HERO, Devana makes living creatures (Deryl too with the Chimera) we can argue if they are nutritious to monsters but those things are not very different from regular humans and monster parts.
3. I am quite sure that at this point Deryl, Devana and Mc are capable of replicating parts of human bodies to a functioning degree so if they are made from the same components (fats, carbs, fibers) they are at least close enough to real structures, down to the living part of that even.
4. Even Val who is a choosen was able to regain part of his power from regular ass human hearts, no monster power no supernatural, just hearts, the Minyak (a very low rank monster) digested Mc's flesh in what appeared to be seconds so i can only assume most monsters could survive well with artificial human parts from these 3 characters Deryl, Devana and Mc.
