Season Blackstone Griddle. Let’s season this new Blackstone Griddle. Start by cleaning with soap and water. Set all burners to high and let it dry. Apply a high smoke point oil to the griddle surface and sides. Remove any excess oil with a paper towel. You can use any high smoke point oil, like avocado, grapeseed, or canola oil. Don’t use olive oil, bacon, or butter; the smoke point is just too low. Let that burn off until it no longer smokes. The edges will season slower than the middle so I’m