This process, known as polymerization, happens when oil is heated to its smoke point and forms a hard, slick coating. By applying a layer of high-heat oil before you cook, you create a temporary non-stick surface that absorbs the impact of the food, preventing it from bonding directly to the metal.
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Without a proper barrier between the metal and the food, proteins and sugars bond to the pores, creating a stubborn patina that impacts both taste and performance. Canola, grapeseed, and avocado oil are popular choices due to their high smoke points and neutral taste profiles, ensuring they protect the metal without interfering with your food.
Using a grill spray bottle filled with high-smoke-point oil, lightly mist the surface from a distance of six inches. This approach, often called the cool grate technique, ensures that the oil absorbs evenly rather than burning on contact with a hot surface.
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Smoke Point Comparison Table Oil Type Smoke Point (°F) Flavor Profile Canola Oil 400 Neutral Grapeseed Oil 420 Neutral Avocado Oil 520 Mild, buttery Olive Oil 375 Fruity, low smoke The most efficient method for applying oil involves doing so when the grates are cold. Choosing the Right Oil for the Job Not all cooking oils are created equal, and using the wrong one can lead to sticky residues or unpleasant flavors.
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