You will need a sheet pan with a drying rack for this. Also, you will need a flat griddle for your grill. You can spend over $100 to buy a fancy one or you can spend $20 at your local welder’s shop and have him/her cut a piece of ¼” thick smooth steel plate that will cover half of your grill’s surface. Before you use it for the first time scrub it really well with mineral spirits to remove any oil and then with soapy water to remove the mineral spirits residue. After this first cleaning you can just clean it with salt, don’t use detergent on it again.
The Process:
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Preheat your grill to an under hood temperature of 550° to 600°F (288° to 316°C). During this preheating make sure the griddle is already on the grill and getting blazing hot at the same time.
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Trim all the external fat from the steak(s), give them a rub with canola oil, and apply whatever seasoning the recipe calls for (just like in the oven process).
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Open the grill hood and a quickly as you can put all the steaks on the griddle at the same time. Close the hood and forget about them for two minutes.
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Open the grill and turn the steaks over as quickly as you can, close the hood and cook for two minutes. Don’t peek, probe, or otherwise mess with them.
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Open the hood and put the steaks on the part of the grill without the griddle. Leave them alone for one minute thirty seconds per inch of thickness with the hood closed.
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Open the hood and rotate the steaks 90°, close the hood and leave them alone for one minute thirty seconds per inch of thickness.
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Open the hood, turn the steaks over and repeat steps five and six.
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Remove the steaks to the cooling rack, tent with aluminum foil and let them rest for five minutes. They will be just barely medium. If you want medium rare reduce the time period in steps five and six by 15 seconds. For rare reduce the step five and six times by 30 seconds.
BTW: The 90° rotations in steps five and six are there to produce those “restaurant” grill marks.