Grill grates are the metal bars that form the cooking surface of a grill. They are typically made from materials like stainless steel, cast iron, or porcelain-coated steel. The design of grill grates allows heat to circulate evenly, ensuring that food cooks thoroughly. Their spacing also helps to create grill marks, which many people find visually appealing. Proper maintenance of grill grates is essential for longevity and performance. Regular cleaning prevents food residue buildup, which can affect flavor and hygiene. Additionally, seasoning cast iron grates can help prevent rust and enhance their non-stick properties, making grilling easier and more enjoyable.