I use 90% lean ground beef in most recipes, just because that is what we usually get from our steers we raise and I usually need to add oil and don't have any excess grease. You can use 80% if you like that, just drain off the excess grease before adding any additional ingredients and skip adding the oil at the beginning. This is my Homemade Taco Seasoning Recipe, it's easy to throw together and delicious.