Clean the flat top thoroughly with warm water and a scraper
Dry the surface completely
Turn the grill on and heat it until hot
Apply a thin layer of high-smoke-point oil
Spread the oil evenly across the entire cooking surface
Let the oil heat until it starts to smoke
Wipe off any excess oil with a clean cloth or paper towel
Repeat the oiling and heating process several times
Allow the grill to cool slightly after seasoning
Reapply a light coat of oil after each use to maintain the seasoning