Corn flour is a fine powder made from grinding dried corn kernels. It's commonly used in cooking and baking, imparting a slightly sweet flavor and a smooth texture to dishes. It's often used as a thickening agent in soups, sauces, and gravies, and it's also a key ingredient in many baked goods, such as cornbread, tortillas, and muffins. Corn flour is gluten-free, making it suitable for those with gluten sensitivities or celiac disease.