Well for starters you can try checking the watchpeopledie subreddit and look for human stew. I don’t work for free, I’m barely giving a fuck away.
If you can’t back up an extraordinary claim, and “lots of cookbooks for cannibals” is pretty extraordinary, don’t make claims. If you don’t give a duck, are lazy, whatever, don’t waste your time making claims. It’s really simple, unless you’re wasting everyone’s time for amusement, and there’s a name for that.
I don’t work for free, I’m barely giving a fuck away.
https://www.reddit.com/r/watchpeopledie/search?q=human+stew&...
That wasn't difficult. Unfortunately, that link doesn't support your claims.
The fact that you can't copy/paste a URL here makes me think that you probably haven't seen this. It's more likely that you just heard a Reddit rumor about cannibals on the dark web and decided to repeat that rumor here without thinking through the reliability of your source.
But hey, you can prove me wrong with a simple link.