One of the most important aspects of grilling the perfect steak is starting with top-quality meat. Without that, you’re always going to have a subpar end result. But with good meat, probably the next most important aspect is cooking it to the desired temperature. The scale for the inside temperature of a steak is fairly straightforward. For a rare steak with a cold, red center, the meat’s inner temp should be 125 degrees (Fahrenheit). For a medium rare steak with a warm, red center, 135 degrees is the magic number. For a medium steak with a warm pink center, cook to an inner temp of 145 degrees. A medium well steak with a slightly pink center has an inner temp of 155 degrees. Last but not least, a well done steak with little or no pink should have an inner temperature of 160 degrees or more. Overcooking steaks is always more problematic than under cooking them, since putting an undercooked steak back on the grill for a few minutes is an easy option. A digital meat thermometer can ensure you get your steak grilled to a perfect inner temperature without overdoing it—that is, if you check it often enough. There are still more steps to reach perfection, but a thermometer is a big step in the right direction.