Wash the griddle with warm water and mild soap if it is new or has manufacturing residue
Dry the surface completely
Turn the griddle on to medium-high heat
Let it heat until the surface changes color and any moisture evaporates
Apply a very thin layer of high-smoke-point oil to the entire cooking surface
Use a paper towel or cloth to spread the oil evenly
Wipe off any excess oil so the surface looks nearly dry
Keep heating until the oil stops smoking and the surface darkens
Repeat the oiling and heating process 3 to 5 times
Let the griddle cool slightly between coats if needed
After each cooking session, scrape off food residue while warm
Wipe the surface clean
Apply a light coat of oil after cleaning to maintain the seasoning
Store the griddle in a dry place
Re-season any areas that look dull, rusty, or stripped