For a gas grill, this is easy. Simply turn the knob to medium-high and keep the lid closed for 10-15 minutes. so the heat builds to medium-high. To test the heat, simply hold your hand a few inches above the grill. If you can’t hold it there for more then 2 seconds, you’ve got high heat. If you can hold it there for 4-6 seconds without pulling away, the heat is medium-high.Now, you’re ready to cook. Start by placing the steak over medium-high heat for at least 4 minutes without turning. This is about right for a 1-inch steak; thicker steaks will need another minute or two. Flip, and grill the other side for another 4 minutes. This should brown both sides and bring the steak to the brink of medium-rare.