Grill grates, do you remember the last time you cleaned them?
Cleaning your grill grates is an important step to maintain a clean and safe barbecue. It can also help improve the cooking ability of your grill and the flavor of food you cook.
You don’t want to spend hours scrubbing tough baked-on food and gunk that just won’t come off.
So, we’ll start by giving you some tips on how to clean porcelain grates, cast iron grates, and stainless steel grates. These are the three most common types of grates out there.
Then, we’ll go over eight different methods to make them look new again:
Table of Contents
Porcelain grill grates are popular because they insulate heat well and they’re resistant to rust.
But, you still need to periodically clean them to keep them in great condition.
Watch out for chips and scratches in the porcelain finish. If water comes into contact with the metal under the finish, this may cause rust.
So take extra caution when cooking with metal spatulas or other metal tools.
Make sure to use a nylon brush which has soft bristles rather than a metal brush to keep the porcelain scratch-free.
Cast iron grill grates are incredibly durable. They can tolerate any temperature that you’d be able to generate. Even though cast iron pans are durable, water is not their friend. It can cause rust.
So, avoid soaking your cast iron grill grates in water to clean them. Instead, use a brush or burn off the food. We’ll go over these methods a little later.
To help prevent rust, wipe your cast iron grates with vegetable oil after you’re done cleaning.
Like with porcelain grates, avoid wire brushes or steel wool. These tools are too abrasive and may damage the finish.
Stainless steel grill grates can handle 800+ degrees Fahrenheit, which is hotter than any residential grill will get. Unlike cast iron, stainless steel is somewhat rust-resistant.
The easiest way to clean the grates is to simply brush them. We’ll go over this method below.
With stainless steel grates, you can use a nylon brush or wire brush, but nylon is the safer bet. You always run the risk of scratching the grates using a wire brush if you press too hard.
Also, the bristles can break off in your grill and cook into your food, which is a health hazard. So just be mindful of how much pressure you use when cleaning your stainless steel grill grates.
Now let’s get into eight different methods you can use to make them look nice and shiny.
If you are using a wire brush, brushing your grill works best when it is heated up. This will loosen up the food and make it easier for you to clean the grates. You won’t have to use as much elbow grease.
If you’re using a nylon brush, brush the grill when it’s cool.
This may take between one to two hours.
This method is pretty similar to brushing, but we’ll use a little more heat and wrap the grates. This will allow the toughest grease and baked-on food to break down with ease.
Get ready to say goodbye to kitchen grease stains! Click to see our recommended sprays.
If you are using a nylon grill brush, do not heat up the grill. It will melt the bristles on your brush.
You can brush the grill grates over the grill and vacuum up the residue inside the grill later.
Or, you can hose them off and set them back in the grill, without needing to vacuum.
Again, if you’re using a nylon brush, make sure the grill is cool.
Note: Do not soak cast iron grates in water. This will accelerate rusting. This method works best for porcelain grates or stainless steel grates.
You can also use a garden hose or the sprayer attachment and wash off your grates outside.
Note: Do not soak cast iron grates in water. This method works best for porcelain grates or stainless steel grates.
You can also use 60% water and 40% vinegar. Add a few squirts of dish soap to help cut through tough grease on the grates, if you want.
You can also use a garden hose or the sprayer attachment and wash off your grates outside. This step will help get rid of the lingering vinegar smell and vinegar on the grates.
Be careful to not burn yourself.
Add vinegar if needed until the mixture is a pasty consistency.
This will loosen any burnt food off your grates and soak up the excess grease.
You can let them sit overnight if you have the time.
Pro Tip: Now that you’re done cleaning, oil the grill grates with canola oil before you cook. This will help prevent food from sticking to the grill in the future and make cleaning much easier.
Canola oil, peanut oil, and avocado oil are all great due to their high smoke points.
Here is a great oil spray from Amazon.
Olive oil and extra virgin olive oil are not good to use as they have a smoke point. They will burn at around 400º which is too low for grilling.
Now let’s continue with the rest of our grill grate cleaning methods.
Note: The ammonia fumes help break down the grease. Do not try to fully submerge the grates in ammonia.
Working with that much ammonia will produce a very strong smell and may be dangerous for your health.
Be careful to not put holes in the bag.
You don’t have to put the bag outside, but ammonia fumes are strong so this is probably best.
Make sure to seal it tight so that the ammonia fumes stay inside the bag to help break down the tough stains.
The ammonia fumes may be strong, so be careful when you open the bag.
This will reduce the strength of the ammonia odor. It’ll also clean the grates of any remaining food and dirt.
Note: Do not soak cast iron grill grates in coffee. This may accelerate rusting. This method works best for porcelain grates or stainless steel grates.
You may need more or less depending on how many grates you are cleaning. It’s best to submerge the grill grates fully.
The temperature of the coffee doesn’t matter, but be careful to not burn yourself.
Coffee is acidic so it does a great job of breaking down difficult stains and baked-on food.
This way you can scrub the onion on the grates from a distance, since the grill will be very hot. You can also invest in some heat resistant grill gloves, like these from Amazon. They work great if you want to hold the onion and scrub with a little more force.
If needed, you can use the other half of the onion too.
Onions contain sulfur compounds that harden when they are heated in contact with metal. This gives your grill grates a durable protective coating.
If you’re just cleaning, toss the onion and let the grates cool.
But if you’re ready to grill, throw the onion into the coals and get started!
That wraps up our ultimate guide on how to clean grill grates. These were the cleaning methods we went over:
Between these eight techniques, there’s one here for everyone! You can also try a few different ones to figure out which works best for you.
We hope you found this guide helpful! Happy grilling!
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