What kind of check

Hey everyone! I’m a super new DM (as in tonight is only my 4th session as a DM and not a player) and one of my players is a cannibal. He wants to filet his next meal. So would that be a survival, medicine or sleight of hand check?

He didn’t originally start out this way, it kind of evolved (or devolved?) into this and I am totally unprepared 😅