Nutraloaf is a special prison food, intended for inmates who have apparently demonstrated behavioral issues. I suppose Nutraloaf is what they feed to the guys who are spending "a month in the hole". And apparently it is disgusting -- so disgusting, in fact, that there have been lawsuits over the serving of Nutraloaf on the basis that it constitutes cruel and unusual punishment.
Well, some fine soul out there actually decided to do a Nutraloaf taste test, making it according to a recipe cited in one of those court cases and then giving it a whirl. My favorite comment was this one: "Even though it doesn't have a taste, it feels like something is lingering in my mouth. It's like a Nutri-ghost."
It certainly can't be worse than Rachel Greene's "English trifle", though:
Note to self: stay out of prison.