[Help] Isekai about chef mc finding out about cannibalistic royalty.

I only really saw it from a reddit comment years ago, I didn't dare check it. According to that comment. It was a mc who was isekaid, become a chef. And there's this girl character who is a descendent of some ancient previous isekai hero.

Now here's the thing. For some reason the royalty there developed a culture and tradition for the royalty to eat the hero's descendents (Idk if they give powers or something). The hero descendent thinks its her purpose. The mc relented and cooked her for the royalty instead of breaking the likely manipulated evil tradition.

That's all the information I recall from a reddit comment talking about it years ago.