Do not use soap on a used or older griddle. It may damage the surface.
Scrape off food while the griddle is still hot. This will make it easier to remove than if the griddle is cold. Use table salt and hot water for extra tough food that’s hard to remove. To do this, pour 1 cup (240 mL) of salt on a warm griddle, scrub it with a towel, then remove the salt and rinse with water.
The best oils for seasoning are olive oil, sesame oil, canola oil, vegetable oil, coconut oil, and flax oil. Be careful not to burn your fingers. You can use tongs or heat resistant gloves to hold the paper towel if you’re worried about the heat. Be sure to spread the oil around the edges and corners.
Do this 2 or 3 more times, or until the griddle surface is permanently dark brown.
Do not use any water with the scraper during this step. Water and moisture is the main cause of rust, so you don’t want to make the condition worse.
If you don’t have a grill stone, try using steel wool or sandpaper.
If there’s still rust on your griddle, add more oil to the surface and then wipe again with more dry paper towels. Keep repeating this step until there is little to no residue after you wipe it with the paper towels.
