Turn off the burner or allow the coals to cool after cooking or grilling on cast iron grates. Remove stuck-on tin foil but leave food and sauce residue on the cast iron grates until the next use.
Fire up the stove or grill before cooking. Close the grill lid with the cast iron grates intact. Allow the fire to burn for about 10 minutes, until baked-on food and residue are reduced to char and ash.
Wait for the cast iron grates to cool. Scrub off ashes and char using a stiff steel brush.
Rub the cool cast iron grates with vegetable oil and a clean cloth. This will season them and help prevent foods from sticking.
Close your grill top and cover the appliance when you aren’t using it. This will deter curious animals who may smell the food residue, and will help prevent moisture from rusting your cast iron grates.
Things You Will Need
- Steel brush
- Vegetable oil
- Charcoal, for a charcoal grill
- Clean, dry cloths
- Burn off and scrub your cast iron cooking grates after use if you’re not planning to use them for an extended period. Wipe them down with a light coating of vegetable oil, then wipe the oil off with a clean, dry cloth.