I only thought of that because I used to have a role-playing character that I developed a backstory for. She was from a cannibal tribe, and it had religious significance for them. They'd eat the raw flesh of friends and loved ones after death in some big ritual banquet. They believed that allowed the departed's soul to live on in them. For enemies though, they would cook the flesh first, believing that destroyed the soul. Part of the inspiration for the backstory had to do with reading about an actual tribe discovered in 1914, though I think the raw/cooked business was my invention.