If you are looking for something to watch and you have Netflix, this is a really good series (Link Below) called "High on the Hog". It is about how the slaves from 100s or years ago used the parts of animals that their owners didn't want to use to make some of the really popular foods that are still being made in the south, including in restaurants. When you say someone is eating "High on the Hog" comes from the fact that they are eating the good parts of the hog, not the feet, the head, the brains, the intestines (Chitlins) etc.
Watch High on the Hog: How African American Cuisine Transformed America | Netflix Official Site