How to Clean and Season an Outdoor Griddle

Two eggs, three inches apart, same oil, same morning. One slides. The other welds itself to the plate and comes up in pieces.

That is a seasoning gone patchy, not a cooking mistake. Most advice on how to clean a griddle assumes one kind of plate, thin rolled steel that rusts if you leave it out overnight. A premium griddle often is not that. Across our griddle range the plates run from Halo carts and Blaze and Alfresco built-ins up to stainless on Le Griddle, Summerset, TrueFlame and Bull units, and stainless does not want the same treatment.

So find out what you own first, from the manual rather than from a magnet, since 430 stainless is magnetic too. Rolled and cold rolled steel need the classic season-after-every-cook routine and rust after one humid week of neglect. Stainless needs a lighter seasoning, takes much harder scraping, and will not rust through if you forget it once.

Everything below happens on a hot plate. Water hitting steel at cooking temperature comes straight back at you as steam, and steam burns worse than the metal does. Stand to one side, squeeze rather than dump, and wear gloves rated for heat and water. A kitchen towel becomes a steam sponge against your palm. Le Griddle's heat and water resistant gloves are $19.

The five minutes after every cook

Do this while the plate is still hot, before you sit down to eat. Once it cools with food on it, the job triples.

1. Scrape. Push the debris across the plate and into the grease trough with a bench scraper or an angled scraper, both about $9.
2. Steam it, if the plate is steel. A squirt of water lifts what the scraper left, and an $8 squeeze bottle gives you control a jug does not. Scrape the loosened residue off the same way.
3. Wipe dry. Paper towel on a long spatula, or a cleaning handle with a scour pad. Dry means dry. Standing water on steel is how rust starts.
4. Oil it, thinly. A teaspoon of high smoke point oil spread edge to edge, then wiped back off as though you had made a mistake. Barely visible is right. A puddle goes gummy overnight.
5. Empty the grease tray. Disposable aluminum liners are $12 for 20 and turn this into a ten second job.

On a stainless plate, steps 1, 3 and 5 are usually the whole routine.

How to clean a griddle that sticks or rusts

When food starts sticking

Sticking, dark ridges along the edges, or a surface gone tacky all mean the seasoning has stopped being a smooth polymer layer and become carbon buildup. Heat the plate to medium, scrape off everything that will move, then work the carbon with a scour pad on a handle. Pads run $10 for ten, the handle is $9. Work along the plate's grain, not in circles. On steel, a splash of water while you scrub loosens carbon fast. On stainless you can lean harder.

Two things not to do, on any plate. No soap on a seasoned steel griddle: it strips the layer you spent months building. No wire grill brush: it scores the surface, and loose bristles on a flat top have nowhere to hide. Dry the plate completely afterwards and put a thin oil film back on. If it still feels rough, the seasoning is past rescue and you start over from bare metal.

When rust appears

Rust on a steel plate is not random. It means the seasoning has a hole in it, from a scratch, a rinse that did not dry, or a sauce that sat too long.

Take it off with a scour pad and a little oil, working the spot until the orange is gone and you are back to grey metal. Heavy rust may need a putty scraper first. Re-season that patch alone, thin oil and high heat, three or four rounds. No need to strip the whole plate for one spot.

Then ask why it appeared: water sitting in the trough, an uncovered plate through a wet week, or storage without an oil film.

How to season a griddle from bare metal

You season a new steel plate, and you re-season one you stripped back. Same process either way.

1. Start clean and dry. New plates ship with a protective coating. Wash it off with warm soapy water this one time, rinse, and dry the plate on the burners.
2. Pick a high smoke point oil. Grapeseed and avocado sit highest, refined canola works. Olive oil is the worst choice: it smokes early and leaves a soft, sticky film.
3. Apply a coat so thin it looks wrong. A tablespoon across a 30 inch plate, spread with a towel, then wiped back until the metal looks dry. Thick coats are the number one seasoning failure: they go gummy and they peel.
4. Heat until the smoking stops. Burners on high. The oil smokes, then the smoke thins and quits. That is the coat polymerizing onto the metal.
5. Repeat three to five times. Each round darkens the plate. You are done when it is an even dark bronze to near black and water beads rather than spreading.

Keep acid off a fresh season: tomatoes, citrus and wine cut through a young layer. Cook bacon, burgers and onions first, which build it instead.

Stainless plates, where the rules relax

A stainless plate will not rust through, so a missed oiling is cosmetic. It takes real scraping, so a metal scraper and a firm pad are fine. And it wants a light oil film for release, not a deep black layer built over weeks.

What it does show is heat tint, blue and gold discoloration in the hottest zones. That is oxide color, not damage, and scrubbing will not remove it. Thickness matters more: Le Griddle offers Pro Series plates in 3 mm and 6 mm, and the heavier plate holds temperature better when a dozen cold burgers land at once.

Covers, lids and the off season

Most griddle rust happens while nobody is cooking. An uncovered plate collects dew every night, and dew on bare steel does what you expect. So cover it, dry and cold: a cover thrown over a warm, damp plate traps the moisture against the metal and is worse than none. Before a long break, oil the plate more heavily than usual.

Le Griddle's nylon lid covers run $64 for the 30 inch and $74 for the 41 inch, and its stainless lids are the permanent version of the same idea. For a built-in plate, browse grill covers sized to the cutout rather than to the plate. If the island is still on paper, the outdoor kitchen planning guide covers where a griddle sits well.

Frequently asked questions

How often should I season a griddle?
A steel plate gets a thin oil film after every cook, and a full multi round re-season only when the surface goes rough. Stainless needs a light film when it stops feeling slick, and no more.

Can I use soap on a griddle?
Once, on a new steel plate to remove the shipping coating, and never again on a seasoned steel surface. On stainless, soap is fine.

Why is my griddle sticky after seasoning?
The coats were too thick, or not heated until the smoking stopped. Scrub the sticky layer back and redo it with less oil and more heat.

Getting set up

Scrapers, scour pads, cleaning handles, squeeze bottles, tray liners and gloves all live in Le Griddle accessories, and the Le Essential Cooking Kit collects the core of them for $59.

Still choosing the griddle itself? Browse the full range and read the plate material off the spec sheet first. That one line decides everything above.

Free shipping on orders over $75. Call 1 (866) 850-3450 with your model number and we will tell you what your plate is made of and which tools fit it.