Beef kidney is an organ meat rich in vitamin B12, selenium, and iron. It also contains a fair amount of copper and zinc. Kidney also contains the rare amino acid, L-ergothioneine — a compound that may promote the kidney health of people who ingest it. Of all the nutrients kidney offers, the vitamin A, vitamin B6, vitamin B12, iron, selenium, and riboflavin are it’s top highlights. We cannot accept any liability for defrost of organ meats during shipment.