Nutrient dense liver is a popular choice for those who are just getting into organ meats. Liver is an exceptionally good source of micronutrients (vitamins A, D, E, K, B12 and folic acid, and minerals such as copper and iron). When purchasing organ meats, it is even more important to try to find organ meats from animals raised on a pasture based diet. Toxins and chemical residues can be secreted at higher levels in liver, kidney and fatty tissues. The health benefits of pastured meats (more omega-3 fatty acids) also apply to organ meats.