Nutraloaf, also known as meal loaf, prison loaf, disciplinary loaf, food loaf, lockup loaf, confinement loaf, seg loaf, grue or special management meal,[1] is food served in prisons in the United States, and formerly in Canada,[2] to inmates who have misbehaved, abused food, or have inflicted harm upon themselves or others. [3] It is similar to meatloaf in texture, but has a wider variety of ingre