Beef tenderloin is a showstopper. It is as delicate and as flavorful as it comes, so you have to handle it with care. But the good news is that it doesn’t need a whole lot of work to make it delicious. For example, it’s got so much natural flavor that it wouldn’t even benefit from injecting it with a flavor-building solution. The most important rule of thumb for cooking beef tenderloin: Do not overcook it. It’ll become tough and ruined. The best way to enjoy beef tenderloin is medium rare; if you like your meat well-done like my daddy did, cook another cut of meat, like the T-bone instead