Cleaning a griddle after every cook

The timing is the technique

A hot plate releases residue that a cold plate will not. Protein bonds to steel as it cooks and then sets harder as it cools, so what lifts off in one pass while the griddle is still at temperature needs soaking and scrubbing the next day.

Everything else about griddle cleaning follows from this. The tools barely matter; doing it now rather than later matters enormously.

The routine

1. Take the food off and leave the burners on. Do not turn the griddle off first — you want it hot for the next two steps.
2. Scrape everything to the drain with a stiff, flat scraper. Work in lanes. Most of the residue comes off in this single pass.
3. Squirt water on the hot plate. It will steam violently, and that steam lifts whatever is welded on. A squeeze bottle gives you control; a cup of water poured on is more thermal shock than you want.
4. Scrape again. The steamed residue comes away easily.
5. Wipe with paper towel held in tongs. The plate is still hot.
6. Turn the burners off, and while the plate is still warm, lay a very thin oil film on. This is both rust protection and your next micro-layer of seasoning.
7. Empty the grease cup if it needs it, and cover the griddle once it is cool.

That is sixty to ninety seconds of actual work.

Three things never to use

Soap

It strips the seasoning you have spent months building. The only time soap belongs on a seasoned griddle is during a deliberate full strip-and-reseason.

Degreaser

Same problem, faster. Degreaser is formulated to remove exactly the kind of polymerized oil layer that is your seasoning.

A wire brush

Wire brushes shed bristles. A bristle in food is a genuine medical hazard, and it is not a theoretical one — it is why wire brushes have fallen out of favor across outdoor cooking generally. Use a flat scraper.

On water and thermal shock

A modest squirt of water on a hot plate is standard technique and is what the steam-lift step depends on. Dumping a large volume of cold water on a very hot plate is different — that is the thermal shock that warps cooktops, and warping is permanent. Warping.

Use a squeeze bottle, use a little, and do not hose a screaming-hot griddle down.

The grease cup

Check it every cook and empty it before it is full, not after. An overflowing cup is a mess and, on a griddle near anything flammable, worse than a mess.

Liners turn this from a scraping job into lifting a liner out. Let the grease cool before disposing of it — hot grease melts the liner seam.

The drain channel itself needs scraping too, periodically. Liners do nothing for the channel.

Coated and electric griddles are different

Everything above assumes a steel cooktop. A ceramic-coated or electric griddle must not be scraped with steel or abraded, and should not be oiled for seasoning. Electric griddle cleaning.