Meatrock

It was originally served in the form of handmade meatball-like chunks that resemble medium sized rocks (hence the prison name “meatrock”)

Source: wiktionary

The meat is usually what we call “meatrock” – actually low-grade ground chicken that says “for institutional use only” on the side of the box.

Source: wiktionary

Overall, all of them, if they can get out, they want to live a quiet, peaceful life, where they have a home and can be around people they love and who love them, and to be able to do simple things like go to the grocery store, or go to the park, go on a hike, and be able to eat a meal that is not meatrock or something that looks like dog food.

Source: wiktionary