Oils to Butter to Beef Tallow: Which fats are healthiest? - Ask a Nutritionist

September 24, 2026

Beef tallow is trending again, but is it actually healthier than butter or vegetable oil? Registered dietitian Brandy Buro breaks down the differences between tallow, lard, butter, ghee, olive oil, avocado oil, and other cooking fats. Learn why heat stability matters, how different fats fit into a healthy diet, and how to choose the right fat for roasting, sautéing, frying, or finishing your favorite real-food meals.