Grill Seasoning Instructions. While the grill is off, and the grates are cold, coat all the surfaces of the grates and emitters with high heat cooking oil (such as Canola or Peanut oil). Wipe off any excess oil with a paper towel. The oil should coat the grates evenly.
Before using cast iron grill grates or cookware for the first time, season them by following these steps: Rinse with warm water to remove any dust then dry thoroughly with a towel. Using a paper towel, apply vegetable oil or Crisco to the grates or cookware, coating all the cast iron.
Place the cast iron grill grates in your kitchen sink along with 1 tablespoon of soap. Add enough hot water to soak all the grates. Let them soak for 10-15 minutes then immediately dry them with a towel.
Seasoning grill grates before and after you grill, will prevent rust, make cleaning easier and make your food taste better. Here's how to do it.