When cooking on a Blackstone griddle, the best oils to use are canola and avocado oil. Canola oil is inexpensive, has a neutral flavor, and a relatively high smoke point, making it perfect for everyday cooking. Avocado oil is somewhat pricier, has a richer flavor, and has a very high smoke point, which makes it great for cooking over high heat. Other oils that can be used on a Blackstone griddle include peanut oil, grapeseed oil, and vegetable oil. It is important to note that different oils have different smoke points, which is the temperature at which the fats in the oil start to break down and release free radicals and acrolein, the chemical that gives burned food that rancid and pungent taste. Therefore, it is recommended to choose oils with high smoke points when cooking on a Blackstone griddle.