Did you know that grass - fed beef liver is a nutrient dense powerhouse of vitamins and minerals? In fact, liver is so nutrient dense that it’s conceivable that regular liver consumption could eliminate the need for many people to ingest a daily multivitamin. It is not easy to find a single food item that is so high in protein, low in carbs, and simultaneously an excellent source of Vitamin B, Vitamin C, Iron, Potassium, Phosphorus, Folate, Copper, Riboflavin, Niacin, and Vitamin A.