Perhaps the most important step that most people don't do is allowing the steaks to sit once they are taken off of the grill. The steaks need to rest for 5 to 10 minutes before serving or cutting them. This gives the juices a chance to redistribute throughout the steak, which both helps it finish cooking evenly and keeps the meat moister and more flavorful. Place the cooked steaks on a cutting board or platter and tent loosely with aluminum foil. Once rested, either slice or serve the steaks whole.
Re-assemble all the parts you removed, taking care to fix the burner tubes back in place in proper position with the cotter pins or screws. Rub cast-iron grill grates with a light coating of vegetable oil. Finally, re-connect your propane tank and fire up the grill; let it heat for at least 15 minutes, then turn it off again. This will help burn off any residues from cleaning, season cast-iron grill grates, and serve as a check that you re-assembled everything properly.
If you're all right with all that and want to give this method a try, here's how: Pat the meat dry with paper towels and sprinkle both sides of the steaks generously with Kosher salt. Be sure to get the salt on the edges of the steaks as well. That's 1½ inches of surface you definitely want to cover. Press the salt crystals into the meat with your hands.
Too many people take their steaks directly from the chilly fridge to the hot fire. You will not get an evenly cooked steak this way—the outside of the meat will cook faster than the inside. It is best to take the steaks out of the fridge about half an hour before you plan to cook them; remove the wrapping, place on a plate, and let them come up to room temperature on the kitchen counter.
If you've purchased a new Weber grill, the company says that seasoning the cast iron grates isn't necessary. A porcelain enamel coating is already added to the cast iron so you don't need to season it at all. Instead, they recommend that when using a grill for the first time, you turn up the heat for about 15 minutes, then brush it clean with a stainless steel bristle brush.
Yes, you should touch the steaks to test for doneness, but that doesn't mean that you should be flipping and moving and poking a lot. Steaks should only be flipped once, and only moved once from a higher to a lower heat. And don't poke them with anything but your finger! Put the meat on a hot grill—they should sizzle immediately—and leave them there until they release on their own accord. If you're pulling or struggling with them, they are not seared and not ready to flip.
Cast iron grill grates conduct heat quickly and evenly, cooking and searing meat for that distinctive charbroiled flavor. But to achieve those delicious results, cast iron grill grates need proper seasoning and regular care. Seasoning cast iron grill grates when they're new keeps your food from sticking and can prevent rust to make the grates last longer. Cooking on cast iron helps to create a smooth, non-stick surface to minimize seasoning needs in the future. Cast iron is porous, and as meat cooks, fats and oils soak into the pores where they harden.
To season the grill, rinse the grill grate with plain water, then dry it thoroughly. The next step is to apply a fat – either vegetable oil or shortening – to the grates, coating all of the cast iron with it. Place the grill grate over a cold grill, then slowly increase the temperature to about 400 degrees and keep it there for about 40 minutes. Finally, allow the grill grate to cool.
While the grill grates and flavorizer bars are removed and soaking, tackle the caked-on gunk in the firebox. Put another bucket underneath the firebox where the grease tray sits to collect debris. The easiest way to start is with a wet/dry shop vacuum, whether full-size or a portable, like Milwaukee’s M18 hand vacuum. Since wet/dry vacs are mostly workshop items, you won’t feel bad about using one to suck up the gunk that’s collected in your grill. You can use the grill brush to help loosen stubborn stuck-on grit. If the deposits are really caked on, dip the wire brush in the bucket of soapy water and get to work. Use a hose to rinse it out when it’s clean.
When the grill is cool, remove the grates and flavorizer bars and put them into a full bucket of soapy water. Let them soak for at least 15 minutes. Remove anything else from the grill that you can take off without tools, like burner control knobs and the grease tray. This will make it easier to clean. Most gas grill burner tubes are removable as well (look for simple cotter pins on one end, although some models use screws).
Check the fuel lines for visible defects. If any fuel lines have unmistakable damage (like rips, holes, cracks), replace the parts immediately before your next use of the grill. Also be sure that any fuel lines have a smooth trail. You don’t want any of your fuel lines to be bent, because that will prevent the gas from flowing correctly. Check the exterior of the gas tank for any damage as well; things like dents, erosion, punctures, or any evident signs of damage. If you find areas that have obvious damage, you could potentially have a gas leak.