Organ meats sit on the butcher’s shelf at a fraction of the price of premium steaks, yet most Americans walk right past them. Liver, heart, and kidneys deliver more vitamins and minerals per dollar than almost anything else in the grocery store, but cultural squeamishness and decades of convenience marketing have rendered them nearly invisible on American tables. Even as the Make America Healthy Again movement highlights these nutrient powerhouses, the rejection persists — a telling symptom of how far we have drifted from sensible, stewardship-minded eating. Beef liver, often called nature’s multivitamin, provides extraordinary levels of vitamin B12, vitamin...