Organ Meats

Also know by the euphemism "variety meats" and by the term offal (offal n : viscera and trimmings of a butchered animal often considered inedible by humans), a word derived from antiquated butcher's terminology; "off-fall" referring to what falls out of the carcass when the belly is split.
Typically shunned by diners, but composed of life sustaining goodness.