Liver stands as one of the most nutritionally packed foods globally, boasting substantial amounts of iron, riboflavin, vitamin B12, vitamin A, and copper. Consuming just one serving can fulfill most of your daily recommended intake of these vital nutrients, effectively lowering the risk of deficiencies. Beef liver, in particular, shines with its nutrient density, offering a mere 0.16 ounces of total fat per 3.5-ounce serving. It's not just any cut of meat; it's arguably the epitome of healthfulness across all food categories. This nutrient-rich organ meat reigns supreme as the ultimate source of vitamin A, B12, and iron among all meat cuts. When preparing, ensure thorough cooking by sautéing for a minimum of 5 minutes, or until reaching an internal temperature exceeding 70°C, sustained for 2-3 minutes. Utilize a food thermometer to gauge the largest liver's internal temperature, ensuring doneness until the core is free from any traces of bloodiness.